# Enstrom F-28C - Type: Aircraft model (FAA registry) - Registry code: 3300407 - Manufacturer (registry): ENSTROM - Model: F-28C - Aircraft type: Rotorcraft - Category: Rotorcraft - Engines: 1 · Reciprocating - Seats: 3 - Weight class: Up to 12,499 lb - Cruise speed: 75 mph - Certification: Type certificated - Data sheet: [TCDS H1CE](https://openairdocs.org/tcds/H1CE) (OpenAirDocs) - Holder: The Enstrom Helicopter Corporation - Registered aircraft: 46 - Page: https://openairdocs.org/model/enstrom-f-28c Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023 - [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023 - [AD 2018-02-01](https://openairdocs.org/ad/2018-02-01): Main Rotor Head · Enstrom Helicopter Corporation, The 280, 280C, 280F and 8 more. Effective Feb 21, 2018 - [AD 2017-26-03](https://openairdocs.org/ad/2017-26-03): Main Rotor System · Enstrom Helicopter Corporation, The 280, 280C, 280F and 11 more. Effective Jan 4, 2018 - [AD 2012-11-05](https://openairdocs.org/ad/2012-11-05): Main Rotor Control · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 6 more. Effective Jul 3, 2012 - [AD 2007-11-02](https://openairdocs.org/ad/2007-11-02): Main rotor push-pull control rod (push-pull rod) · Enstrom Helicopter Corporation, The 280, 280C, 280F and 7 more. Effective Oct 2, 2007 - [AD 2007-16-01](https://openairdocs.org/ad/2007-16-01): Main rotor blade retention pin (retention pin) · Enstrom Helicopter Corporation, The 280, 280C, 280F and 11 more. Effective Aug 15, 2007 - [AD 2002-08-03](https://openairdocs.org/ad/2002-08-03): Main Rotor Transmission and Radius of Upper Fillet of Shaft · Enstrom Helicopter Corporation, The 280, 280C, 280F and 21 more. Effective May 2, 2002 - [AD 97-20-04](https://openairdocs.org/ad/97-20-04): Voltage Regulator and Over-Voltage Relay · Enstrom Helicopter Corporation, The 280, 280C, F-28A and 1 more. Effective Oct 7, 1997 - [AD 96-06-02](https://openairdocs.org/ad/96-06-02): Swashplate Bearings · Enstrom Helicopter Corporation, The 280, 280C, F-28A and 2 more. Effective Apr 25, 1996 - [AD 96-06-03](https://openairdocs.org/ad/96-06-03): Main Rotor Transmission Clutch Assembly · Enstrom Helicopter Corporation, The 280, 280C, 280F and 6 more. Effective Apr 23, 1996 - [AD 94-17-15](https://openairdocs.org/ad/94-17-15): Main Rotor Feathering Bearing · Enstrom Helicopter Corporation, The 280, 280C, 280F and 5 more. Effective Sep 15, 1994 - [AD 93-24-13](https://openairdocs.org/ad/93-24-13): Trim System · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 3 more. Effective Aug 26, 1994 - [AD 94-13-03](https://openairdocs.org/ad/94-13-03): Tail Rotor Spindle Inspection · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 3 more. Effective Aug 12, 1994 - [AD 93-15-10](https://openairdocs.org/ad/93-15-10): Composite-Wrapped Main Rotor Shaft · Enstrom Helicopter Corporation, The 280, 280C, 280F and 5 more. Effective Jan 28, 1994 - [AD 90-17-03](https://openairdocs.org/ad/90-17-03): Tail Rotor Drive Shaft Couplings · Enstrom Helicopter Corporation, The 280, 280C, 280F and 5 more. Effective Sep 7, 1990 - [AD 90-17-02](https://openairdocs.org/ad/90-17-02): Tail Rotor Drive Shaft Couplings · Enstrom Helicopter Corporation, The 280, 280C, 280F and 6 more. Effective Sep 7, 1990 - [AD 90-01-06](https://openairdocs.org/ad/90-01-06): Tail Rotor Gearbox · Enstrom Helicopter Corporation, The 280, 280C, 280F and 6 more. Effective Feb 1, 1990 - [AD 88-11-06](https://openairdocs.org/ad/88-11-06): Horizontal Stabilizer · Enstrom Helicopter Corporation, The F-28, F-28A, F-28C and 4 more. Effective May 31, 1988 - [AD 82-24-01](https://openairdocs.org/ad/82-24-01): Drivebelt Clutch Mechanism · Enstrom Helicopter Corporation, The 280, 280C, 280F and 3 more. Effective Nov 30, 1982 - [AD 82-16-09](https://openairdocs.org/ad/82-16-09): Main Rotor Blade Grips · Enstrom Helicopter Corporation, The 280, 280C, 280F and 3 more. Effective Aug 4, 1982 - [AD 79-10-06 R1](https://openairdocs.org/ad/79-10-06-R1): Tail Rotor Blade Grips · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Mar 19, 1982 - [AD 81-17-01](https://openairdocs.org/ad/81-17-01): Starting Vibrator Assemblies · Bendix Starting Vibrator Assemblies, B-2, B-2A and 49 more. Effective Aug 13, 1981 - [AD 79-07-02](https://openairdocs.org/ad/79-07-02): Batteries · Aircraft Parts & Development A, A-2, A-3 and 149 more. Effective Apr 3, 1979 - [AD 79-02-01](https://openairdocs.org/ad/79-02-01): Turbochargers · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Jan 17, 1979 - [AD 77-25-05](https://openairdocs.org/ad/77-25-05): Idle Mixture · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Dec 21, 1977 - [AD 77-20-02](https://openairdocs.org/ad/77-20-02): Tail Rotor Spindle · Enstrom Helicopter Corporation, The 280, 280C, F-28 and 2 more. Effective Oct 6, 1977 - [AD 77-15-04](https://openairdocs.org/ad/77-15-04): Tail Rotor Pitch Link Assembly · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Jul 26, 1977 - [AD 77-06-04](https://openairdocs.org/ad/77-06-04): Tail Rotor Assembly · Enstrom Helicopter Corporation, The 280C, F-28C, 280C and 1 more. Effective Mar 31, 1977 Historical (superseded or no longer in force): - [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021 - [AD 2015-08-51](https://openairdocs.org/ad/2015-08-51) (historical): Main Rotor Head · Enstrom Helicopter Corporation, The 280, 280C, 280F and 8 more. Effective Jun 2, 2015 - [AD 2015-04-51](https://openairdocs.org/ad/2015-04-51) (historical): Main Rotor Head · Enstrom Helicopter Corporation, The 280, 280C, 280F and 8 more - [AD 2011-26-10](https://openairdocs.org/ad/2011-26-10) (historical): Cyclic trim system · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 6 more. Effective Jan 23, 2012 - [AD 2001-22-01](https://openairdocs.org/ad/2001-22-01) (historical): Main Rotor Shaft · Enstrom Helicopter Corporation, The 280, 280C, 280F and 8 more. Effective Nov 13, 2001 ## Information bulletins (advisory) (2) - [SAIB SW-12-45](https://openairdocs.org/saib/SW-12-45): Garmin Model 400W/500W Series GPS-WAAS Navigation System. Issued Oct 3, 2012 - [SAIB SW-12-10R1](https://openairdocs.org/saib/SW-12-10R1): Fuel Level Indication. Issued Feb 3, 2012 ## Registered aircraft (46) - [N116TB](https://openairdocs.org/aircraft/N116TB): [Mcmullan Francis G](https://openairdocs.org/faa-owner/MCMULLAN%20FRANCIS%20G), [Weirsdale, FL](https://openairdocs.org/faa-place/FL/Weirsdale), S/N 362 - [N128SA](https://openairdocs.org/aircraft/N128SA): [Fly-Right Aviation LLC](https://openairdocs.org/faa-owner/FLY-RIGHT%20AVIATION%20LLC), [Anderson, SC](https://openairdocs.org/faa-place/SC/Anderson), S/N 355 - [N191J](https://openairdocs.org/aircraft/N191J): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1977, S/N 390 - [N212AK](https://openairdocs.org/aircraft/N212AK): [Hinshaw Martin E](https://openairdocs.org/faa-owner/HINSHAW%20MARTIN%20E), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 1978, S/N 431 - [N255JS](https://openairdocs.org/aircraft/N255JS): [Falcon Helicopters Inc](https://openairdocs.org/faa-owner/FALCON%20HELICOPTERS%20INC), [Logan, NM](https://openairdocs.org/faa-place/NM/Logan), S/N 364 - [N35ZE](https://openairdocs.org/aircraft/N35ZE): [Ferree Thomas L](https://openairdocs.org/faa-owner/FERREE%20THOMAS%20L), [Wampum, PA](https://openairdocs.org/faa-place/PA/Wampum), built 1981, S/N 508-2R - [N4210](https://openairdocs.org/aircraft/N4210): [Lrh Equipment LLC](https://openairdocs.org/faa-owner/LRH%20EQUIPMENT%20LLC), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), S/N 421 - [N51665](https://openairdocs.org/aircraft/N51665): [Rotor-Lift LLC](https://openairdocs.org/faa-owner/ROTOR-LIFT%20LLC), [Swartz Creek, MI](https://openairdocs.org/faa-place/MI/Swartz%20Creek), S/N 404 - [N51693](https://openairdocs.org/aircraft/N51693): [Borreson Anthony](https://openairdocs.org/faa-owner/BORRESON%20ANTHONY), [Reno, NV](https://openairdocs.org/faa-place/NV/Reno), built 1977, S/N 411 - [N51699](https://openairdocs.org/aircraft/N51699): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1977, S/N 416 - [N51757](https://openairdocs.org/aircraft/N51757): [Spencer John S](https://openairdocs.org/faa-owner/SPENCER%20JOHN%20S), [Indian, AK](https://openairdocs.org/faa-place/AK/Indian), built 1978, S/N 423 - [N51758](https://openairdocs.org/aircraft/N51758): [Enstrom Instruction LLC](https://openairdocs.org/faa-owner/ENSTROM%20INSTRUCTION%20LLC), [Newark, DE](https://openairdocs.org/faa-place/DE/Newark), built 1978, S/N 435 - [N51768](https://openairdocs.org/aircraft/N51768): [Stocker Concrete Co](https://openairdocs.org/faa-owner/STOCKER%20CONCRETE%20CO), [Gnadenhutten, OH](https://openairdocs.org/faa-place/OH/Gnadenhutten), built 1978, S/N 446 - [N51769](https://openairdocs.org/aircraft/N51769): [Arizona Skies Aviation LLC](https://openairdocs.org/faa-owner/ARIZONA%20SKIES%20AVIATION%20LLC), [Scottsdale, AZ](https://openairdocs.org/faa-place/AZ/Scottsdale), S/N 443 - [N51770](https://openairdocs.org/aircraft/N51770): [Lrh Equipment LLC](https://openairdocs.org/faa-owner/LRH%20EQUIPMENT%20LLC), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), S/N 445 - [N51774](https://openairdocs.org/aircraft/N51774): [Salaika Timothy A](https://openairdocs.org/faa-owner/SALAIKA%20TIMOTHY%20A), [Danbury, TX](https://openairdocs.org/faa-place/TX/Danbury), S/N 440 - [N51778](https://openairdocs.org/aircraft/N51778): [Medical Evacuation Disaster Intervention Corps](https://openairdocs.org/faa-owner/MEDICAL%20EVACUATION%20DISASTER%20INTERVENTION%20CORPS), [Springdale, AR](https://openairdocs.org/faa-place/AR/Springdale), S/N 451-2 - [N51788](https://openairdocs.org/aircraft/N51788): [Rhoads Timothy C](https://openairdocs.org/faa-owner/RHOADS%20TIMOTHY%20C), [Logan, NM](https://openairdocs.org/faa-place/NM/Logan), built 1978, S/N 452-2 - [N51789](https://openairdocs.org/aircraft/N51789): [Breyer Charles A](https://openairdocs.org/faa-owner/BREYER%20CHARLES%20A), [Lewes, DE](https://openairdocs.org/faa-place/DE/Lewes), built 1978, S/N 454-2 - [N539H](https://openairdocs.org/aircraft/N539H): [Sharkey'S Helicopters Inc](https://openairdocs.org/faa-owner/SHARKEY'S%20HELICOPTERS%20INC), [West Lebanon, NH](https://openairdocs.org/faa-place/NH/West%20Lebanon), built 1976, S/N 334 - [N53SA](https://openairdocs.org/aircraft/N53SA): [Borreson Anthony](https://openairdocs.org/faa-owner/BORRESON%20ANTHONY), [Reno, NV](https://openairdocs.org/faa-place/NV/Reno), built 1977, S/N 385 - [N542H](https://openairdocs.org/aircraft/N542H): [Graham Jack D](https://openairdocs.org/faa-owner/GRAHAM%20JACK%20D), [Hamilton, TX](https://openairdocs.org/faa-place/TX/Hamilton), built 1976, S/N 343 - [N544H](https://openairdocs.org/aircraft/N544H): [Lrh Equipment LLC](https://openairdocs.org/faa-owner/LRH%20EQUIPMENT%20LLC), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), S/N 335 - [N549H](https://openairdocs.org/aircraft/N549H): [Bazemore Dennis A](https://openairdocs.org/faa-owner/BAZEMORE%20DENNIS%20A), [Ingleside, TX](https://openairdocs.org/faa-place/TX/Ingleside), built 1976, S/N 345 - [N56874](https://openairdocs.org/aircraft/N56874): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1979, S/N 467 - [N5688R](https://openairdocs.org/aircraft/N5688R): [Lowell Darryl S](https://openairdocs.org/faa-owner/LOWELL%20DARRYL%20S), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), S/N 466-2 - [N5688T](https://openairdocs.org/aircraft/N5688T): [Joe Koch Construction Inc](https://openairdocs.org/faa-owner/JOE%20KOCH%20CONSTRUCTION%20INC), [Youngstown, OH](https://openairdocs.org/faa-place/OH/Youngstown), built 1980, S/N 480-2 - [N5689N](https://openairdocs.org/aircraft/N5689N): [Robinson Ryan A](https://openairdocs.org/faa-owner/ROBINSON%20RYAN%20A), [Burbank, CA](https://openairdocs.org/faa-place/CA/Burbank), built 1979, S/N 468-2 - [N5690K](https://openairdocs.org/aircraft/N5690K): [Aircraft Guaranty Corp Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20GUARANTY%20CORP%20TRUSTEE), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), S/N 477 - [N5690P](https://openairdocs.org/aircraft/N5690P): [Multiaero Corp](https://openairdocs.org/faa-owner/MULTIAERO%20CORP), [Brooklyn, NY](https://openairdocs.org/faa-place/NY/Brooklyn), S/N 475-2 - [N5691M](https://openairdocs.org/aircraft/N5691M): [Browning Robert F](https://openairdocs.org/faa-owner/BROWNING%20ROBERT%20F), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington), built 1980, S/N 485-2 - [N5692Y](https://openairdocs.org/aircraft/N5692Y): [Silverado Sales Inc](https://openairdocs.org/faa-owner/SILVERADO%20SALES%20INC), [Orem, UT](https://openairdocs.org/faa-place/UT/Orem), built 1980, S/N 494-2 - [N5694A](https://openairdocs.org/aircraft/N5694A): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1980, S/N 491-2 - [N5696M](https://openairdocs.org/aircraft/N5696M): [Hubbard Benjamin L](https://openairdocs.org/faa-owner/HUBBARD%20BENJAMIN%20L), [Quogue, NY](https://openairdocs.org/faa-place/NY/Quogue), built 1980, S/N 502-2 - [N572H](https://openairdocs.org/aircraft/N572H): [Cordrey Kenneth R](https://openairdocs.org/faa-owner/CORDREY%20KENNETH%20R), [Delmar, DE](https://openairdocs.org/faa-place/DE/Delmar), built 1976, S/N 356 - [N624CE](https://openairdocs.org/aircraft/N624CE): [Certified Equipment Inspections LLC](https://openairdocs.org/faa-owner/CERTIFIED%20EQUIPMENT%20INSPECTIONS%20LLC), [Washington, PA](https://openairdocs.org/faa-place/PA/Washington), S/N 462 - [N631DP](https://openairdocs.org/aircraft/N631DP): [Heritage Rotors LLC](https://openairdocs.org/faa-owner/HERITAGE%20ROTORS%20LLC), [De Leon Springs, FL](https://openairdocs.org/faa-place/FL/De%20Leon%20Springs), built 1980, S/N 492-2 - [N643H](https://openairdocs.org/aircraft/N643H): [Hagglund Caleb J](https://openairdocs.org/faa-owner/HAGGLUND%20CALEB%20J), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), S/N 396 - [N666MD](https://openairdocs.org/aircraft/N666MD): [Lrh Equipment LLC](https://openairdocs.org/faa-owner/LRH%20EQUIPMENT%20LLC), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), S/N 338 - [N728DB](https://openairdocs.org/aircraft/N728DB): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1993, S/N 332 - [N77HX](https://openairdocs.org/aircraft/N77HX): [Appold Dave J](https://openairdocs.org/faa-owner/APPOLD%20DAVE%20J), [Bay City, MI](https://openairdocs.org/faa-place/MI/Bay%20City), built 1979, S/N 4702 - [N80193](https://openairdocs.org/aircraft/N80193): [Fisher Larry L Jr](https://openairdocs.org/faa-owner/FISHER%20LARRY%20L%20JR), [Saint Charles, MI](https://openairdocs.org/faa-place/MI/Saint%20Charles), built 1976, S/N 366 - [N86198](https://openairdocs.org/aircraft/N86198): [Styer David B](https://openairdocs.org/faa-owner/STYER%20DAVID%20B), [Pendleton, OR](https://openairdocs.org/faa-place/OR/Pendleton), built 1981, S/N 521-2 - [N88RW](https://openairdocs.org/aircraft/N88RW): [Rhoads Timothy C](https://openairdocs.org/faa-owner/RHOADS%20TIMOTHY%20C), [Logan, NM](https://openairdocs.org/faa-place/NM/Logan), S/N 518-2 - [N90BZ](https://openairdocs.org/aircraft/N90BZ): [Mirand Alexander A](https://openairdocs.org/faa-owner/MIRAND%20ALEXANDER%20A), [Huntington Beach, CA](https://openairdocs.org/faa-place/CA/Huntington%20Beach), S/N 408 - [N9552](https://openairdocs.org/aircraft/N9552): [Runge Kerry A](https://openairdocs.org/faa-owner/RUNGE%20KERRY%20A), [Crystal Lake, IL](https://openairdocs.org/faa-place/IL/Crystal%20Lake), built 1978, S/N 056 ## NTSB investigations (101, newest 50) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB WPR26LA094](https://openairdocs.org/ntsb/WPR26LA094), Feb 2, 2026: Enstrom F28C (N5692Y), Leeds, UT, substantial damage, investigation ongoing - [NTSB ANC23LA024](https://openairdocs.org/ntsb/ANC23LA024), Mar 5, 2023: Enstrom F-28C (N5688R), Anchorage, AK, substantial damage. Probable cause: The pilot’s failure to maintain main rotor rpm on takeoff, which resulted in a forced run-on landing. - [NTSB ERA21LA357](https://openairdocs.org/ntsb/ERA21LA357), Sep 8, 2021: Enstrom F28 (N51789), Toughkenamon, PA, substantial damage. Probable cause: The pilot’s failure to maintain control of the helicopter during an out-of-ground effect hover in a gusty wind, due to loss of tail rotor effectiveness. - [NTSB ERA19TA005](https://openairdocs.org/ntsb/ERA19TA005), Oct 7, 2018: Enstrom F28 (N5691Y), Bridgeville, DE, substantial damage. Probable cause: The pilot's mismanagement of collective pitch control during takeoff from an area with numerous obstacles, which resulted in the helicopter entering a low rotor rpm state and a forced hard landing. - [NTSB WPR17LA158](https://openairdocs.org/ntsb/WPR17LA158), Jul 19, 2017: Enstrom F 28C (N5697B), Ontario, CA, substantial damage. Probable cause: The student pilot's mismanagement of the main rotor rpm, which resulted in low rotor rpm, a high descent rate, and a subsequent hard landing. - [NTSB CEN15CA274](https://openairdocs.org/ntsb/CEN15CA274), Jun 14, 2015: Enstrom F 28C (N51778), Romeoville, IL, substantial damage. Probable cause: The certified flight instructor (CFI) did not maintain directional control during a downwind emergency running landing to soft muddy terrain, which resulted in a dynamic rollover. Contributing to the… - [NTSB WPR15CA128](https://openairdocs.org/ntsb/WPR15CA128), Mar 14, 2015: Enstrom F28 - C (N5688N), Shelby, MT, substantial damage. Probable cause: The pilot's failure to maintain main rotor RPM during a low altitude operation, which resulted in a loss of aircraft control and collision with terrain. - [NTSB ERA13LA433](https://openairdocs.org/ntsb/ERA13LA433), Sep 27, 2013: Enstrom F-28C (N631DP), Bloomsburg, PA, minor damage, 1 fatal. Probable cause: The relieved pilot’s failure to maintain clearance from the rotating main rotor blades after he exited the helicopter. - [NTSB CEN13CA238](https://openairdocs.org/ntsb/CEN13CA238), Apr 24, 2013: Enstrom F-28C (N51767), Lanesboro, IA, substantial damage. Probable cause: The pilot’s failure to maintain control of the helicopter while making an off-airport landing with a gusty tailwind. - [NTSB CEN13LA099](https://openairdocs.org/ntsb/CEN13LA099), Dec 7, 2012: Enstrom F-28C (N574H), Abilene, TX, substantial damage. Probable cause: The flight instructor's failure to conduct an autorotation following the loss of engine power due to fuel exhaustion. Contributing to the accident was the failure of the flight instructor and the… - [NTSB WPR12LA111](https://openairdocs.org/ntsb/WPR12LA111), Feb 20, 2012: Enstrom F28 (N51727), Kalispell, MT, substantial damage. Probable cause: A total loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation. - [NTSB CEN11LA414](https://openairdocs.org/ntsb/CEN11LA414), Jun 23, 2011: Enstrom F-28C-2 (N5694A), Blair, NE, substantial damage. Probable cause: The failure of a tail rotor pitch change link due to the retaining bolt becoming separated in flight. Contributing to the accident was the pilot’s inadequate preflight inspection. - [NTSB ERA11CA166](https://openairdocs.org/ntsb/ERA11CA166), Feb 26, 2011: Enstrom F-28C (N5689B), Fort Pierce, FL, substantial damage. Probable cause: The pilot's improper fuel management, which resulted in a loss of engine power due to fuel exhaustion. - [NTSB ERA10CA134](https://openairdocs.org/ntsb/ERA10CA134), Feb 6, 2010: Enstrom F-28C (N426KA), Fort Pierce, FL, substantial damage. Probable cause: The pilot's inadvertent encounter with settling with power while hovering downwind. - [NTSB DEN08LA081](https://openairdocs.org/ntsb/DEN08LA081), Apr 18, 2008: Enstrom F28C (N56895), Mosby, MO, destroyed. Probable cause: A loss of engine power for reasons undetermined, and the pilot's decision to discontinue the autorotation when he thought engine power had been restored. Contributing to the accident were the low… - [NTSB NYC06CA008](https://openairdocs.org/ntsb/NYC06CA008), Oct 11, 2005: Enstrom F-28C (N51772), Smoketown, PA, substantial damage. Probable cause: The student pilot's failure to maintain aircraft control while performing pedal turns at a hover, resulting in a collision with terrain. - [NTSB DEN05LA068](https://openairdocs.org/ntsb/DEN05LA068), Apr 13, 2005: Enstrom F-28C (N5690K), Morrison, CO, substantial damage. Probable cause: the pilot's failure to maintain rotor RPM during the approach which resulted in a landing short of the helipad. - [NTSB MIA05CA030](https://openairdocs.org/ntsb/MIA05CA030), Nov 17, 2004: Enstrom F-28C (N595H), Panama City Bch, FL, substantial damage. Probable cause: The pilot's improper refueling of the helicopter resulting in loss of engine power do to fuel exhaustion and damage to the helicopter during the subsequent hard forced landing. - [NTSB CHI04IA018](https://openairdocs.org/ntsb/CHI04IA018), Oct 22, 2003: Enstrom F-28C (N77HX), Lapeer, MI, incident, minor damage. Probable cause: Complete failure of the right anti-torque cable while on final approach for landing. A factor was the diminished tail rotor control resulting from the broken cable. - [NTSB CHI03LA240](https://openairdocs.org/ntsb/CHI03LA240), Aug 2, 2003: Enstrom F-28C (N15SA), Kankakee, IL, substantial damage. Probable cause: The pilot misjudged flare which led to a hard landing. Contributing to the accident was the pilot's failure to follow procedures/directives when he exceeded the airplane's weight and balance. - [NTSB CHI03LA217](https://openairdocs.org/ntsb/CHI03LA217), Jul 20, 2003: Enstrom F-28C (N51699), Waverly, IA, substantial damage. Probable cause: The main rotor blade push-pull rods being corroded, sustaining fatigue, and separating in cruise and the main rotor blade contacting the tail boom during the emergency landing. Factors were the… - [NTSB DEN03LA018](https://openairdocs.org/ntsb/DEN03LA018), Nov 23, 2002: Enstrom F-28C (N552CS), Morrison, CO, substantial damage. Probable cause: the pilot not maintaining clearance from the telephone lines during landing. Factors contributing to the accident were the pilot not being able to see the telephone lines, the low altitude, and the… - [NTSB DEN02LA051](https://openairdocs.org/ntsb/DEN02LA051), Jun 10, 2002: Enstrom F-28C (N5694Z), Medicine Bow, WY, substantial damage. Probable cause: the unsuitable terrain encountered during the emergency autorotation, following a partial loss of engine power. Factors contributing to this accident were fuel contamination (water), the low… - [NTSB LAX02LA169](https://openairdocs.org/ntsb/LAX02LA169), May 20, 2002: Enstrom F-28C (N51716), Stockton, CA, substantial damage. Probable cause: The pilot's failure to maintain an adequate clearance from the water tower during takeoff. Also causal was the pilot's selection of a confined area for the landing and subsequent takeoff. - [NTSB SEA02LA075](https://openairdocs.org/ntsb/SEA02LA075), Apr 20, 2002: Enstrom F-28C (N51769), Hot Springs, MT, substantial damage. Probable cause: The pilot's failure to adequately compensate for unfavorable wind conditions. Factors include unfavorable/shifting winds, and a tailwind gust. - [NTSB DEN01LA106](https://openairdocs.org/ntsb/DEN01LA106), May 30, 2001: Enstrom F-28C (N83GT), Elizabeth, CO, substantial damage. Probable cause: the loss of engine power during approach for an undetermined reason. A contributing factor was the high density altitude. - [NTSB LAX01LA120](https://openairdocs.org/ntsb/LAX01LA120), Mar 18, 2001: Enstrom F-28C (N637H), Hollister, CA, destroyed. Probable cause: the pilot's inadequate use of the antitorque controls and subsequent failure to maintain directional control of the helicopter during the takeoff initial climb. - [NTSB MIA01LA097](https://openairdocs.org/ntsb/MIA01LA097), Mar 11, 2001: Enstrom F-28C (N5687H), Orlando, FL, destroyed. Probable cause: a fire due to a broken and separated turbocharger exhaust which allowed hot exhaust to ignite the engine shroud. - [NTSB IAD00LA056](https://openairdocs.org/ntsb/IAD00LA056), Jul 1, 2000: Enstrom F28C (N20PZ), Ravenna, OH, substantial damage. Probable cause: the student pilot's loss of helicopter control after suffering a stroke in flight. - [NTSB SEA00LA103](https://openairdocs.org/ntsb/SEA00LA103), Jun 8, 2000: Enstrom F-28C (N80193), Kennewick, WA, substantial damage. Probable cause: The pilot's exceedance of the helicopter's hovering capabilities in a downwind hover. Factors included tailwind conditions, the pilot's lack of experience in the type of operation being conducted,… - [NTSB SEA00FA014](https://openairdocs.org/ntsb/SEA00FA014), Nov 2, 1999: Enstrom F28C (N635H), Pendleton, OR, destroyed, 1 fatal. Probable cause: Failure to maintain clearance from the runway surface while maneuvering at low altitude, and inadequate remedial action after the tail rotor struck the surface. - [NTSB LAX99LA226](https://openairdocs.org/ntsb/LAX99LA226), Jun 23, 1999: Enstrom F28C (N595H), Kaunakakai, HI, substantial damage. Probable cause: The pilot encountered a dust devil during the takeoff transition from a dirt and grass area resulting in a loss of vision, disorientation, and subsequent collision with trees. - [NTSB SEA99LA048](https://openairdocs.org/ntsb/SEA99LA048), Apr 7, 1999: Enstrom F-28C (N51770), Pendleton, OR, substantial damage. Probable cause: A loss of power due to water contamination of the fuel. Factors include the inability of the helicopter to perform a successful autorotation immediately after takeoff. - [NTSB FTW98LA129](https://openairdocs.org/ntsb/FTW98LA129), Feb 15, 1998: Enstrom F-28C-2 (N5693M), Broomfield, CO, substantial damage. Probable cause: water contamination in the fuel, which resulted in loss of engine power and a forced (autorotative) landing. Factors relating to the accident were: darkness; and a high obstruction in the emergency… - [NTSB NYC98FA018](https://openairdocs.org/ntsb/NYC98FA018), Oct 24, 1997: Enstrom F-28C (N1944J), Fairview, PA, substantial damage. Probable cause: inadequate maintenance, which led to detonation and a melted piston, and subsequent power loss. - [NTSB NYC97LA119](https://openairdocs.org/ntsb/NYC97LA119), Jun 13, 1997: Enstrom F-280C (N5700J), Sharon, VT, substantial damage. Probable cause: The pilot's improper decision to descend and fly at 100 feet over a river and his failure to maintain adequate obstacle clearance, which resulted in the in-flight collision with wires. - [NTSB LAX97LA133](https://openairdocs.org/ntsb/LAX97LA133), Mar 27, 1997: Enstrom F-28C (N294SB), Sacaton, AZ, substantial damage. Probable cause: the pilot's improper use of the collective by not maintaining rotor rpm during takeoff from a confined area. - [NTSB FTW97LA094](https://openairdocs.org/ntsb/FTW97LA094), Jan 30, 1997: Enstrom F-28C (N51774), Lake Jackson, TX, destroyed. Probable cause: The failure of the #2 cylinder for an undetermined reason which resulted in an exhaust leak that melted an oil line. - [NTSB SEA97FA003](https://openairdocs.org/ntsb/SEA97FA003), Oct 5, 1996: Enstrom F-28C (N574H), Spokane, WA, substantial damage. Probable cause: a loss of engine power for undetermined reasons. - [NTSB MIA96LA106](https://openairdocs.org/ntsb/MIA96LA106), Mar 26, 1996: Enstrom F-28C (N56874), Defuniak Spring, FL, destroyed. Probable cause: The pilot's inadvertent flight into instrument meteorological conditions, and inadvertent descent, due to spatial disorientation, which resulted in a collision with trees. Factors relating to the… - [NTSB BFO96LA003](https://openairdocs.org/ntsb/BFO96LA003), Oct 6, 1995: Enstrom F28-280C (N51786), Blue Ash, OH, substantial damage. Probable cause: the commercial pilot's failure to maintain clearance from obstacles during hover-taxi operations. Related factors the tailwind, the nearby obstacle, and the misjudged maneuver to avoid obstacles. - [NTSB LAX95LA332](https://openairdocs.org/ntsb/LAX95LA332), Sep 10, 1995: Enstrom F-28C (N5689T), Livermore, CA, destroyed, 1 fatal. Probable cause: the pilot's inadequate preflight fuel load determination procedures which resulted in fuel exhaustion. In addition, the pilot's delayed and improper use of the collective and cyclic flight controls… - [NTSB LAX95LA139](https://openairdocs.org/ntsb/LAX95LA139), Mar 19, 1995: Enstrom F28C-2 (N5693W), San Gorgonio, CA, destroyed. Probable cause: the pilot's selection of an inadequate terrain clearance altitude while overflying mountainous terrain. - [NTSB LAX95LA017](https://openairdocs.org/ntsb/LAX95LA017), Oct 8, 1994: Enstrom F-28C (N5697D), La Verne, CA, substantial damage. Probable cause: an inadvertant entry into a settling with power condition and the flight instructor's inability to correct the situation due to an inadequate altitude above ground. - [NTSB SEA93FA178](https://openairdocs.org/ntsb/SEA93FA178), Aug 18, 1993: Enstrom F-28C (N86198), Seattle, WA, substantial damage. Probable cause: SHORTED MAGNETO CONDENSERS. FACTORS INCLUDE A HIDDEN OBSTRUCTION IN THE LANDING AREA, AND A REDUCTION IN ROTOR RPM FROM ATTEMPTING TO AVOID THE OBSTRUCTION. - [NTSB NYC93GA151](https://openairdocs.org/ntsb/NYC93GA151), Aug 12, 1993: Enstrom F-28C (N51786), Gallipolis, OH, substantial damage. Probable cause: The pilot's improper use of the collective and throttle which resulted in a low rotor rpm condition and a loss of control, and an inflight collision with the terrain. - [NTSB DEN93LA070](https://openairdocs.org/ntsb/DEN93LA070), Jun 27, 1993: Enstrom F-28C (N625H), Boulder, CO, substantial damage. Probable cause: A FAILURE BY THE PILOT FLYING TO ADEQUATELY COMPENSATE FOR WIND CONDITIONS WHICH LED TO A LOSS OF TAIL ROTOR CONTROL. A FACTOR WAS: INADEQUATE SUPERVISION BY THE PILOT IN COMMAND. - [NTSB NYC93FA115](https://openairdocs.org/ntsb/NYC93FA115), Jun 17, 1993: Enstrom F28C (N200NH), Gordon, KY, destroyed, 1 fatal. Probable cause: THE PILOT'S FAILURE TO SEE AND AVOID THE WIRE. - [NTSB CHI93LA212](https://openairdocs.org/ntsb/CHI93LA212), Jun 14, 1993: Enstrom F-28C (N51717), Buckner, MO, substantial damage. Probable cause: THE NUT BACKING OFF THE CONNECTING ROD BOLT RESULTING IN ROD FAILURE. A FACTOR INVOLVED IN THIS ACCIDENT WAS THE LACK OF SUITABLE TERRAIN FOR THE PILOT IN COMMAND TO MAKE A RUN ON LANDING. - [NTSB LAX92LA362](https://openairdocs.org/ntsb/LAX92LA362), Aug 20, 1992: Enstrom F28C (N595H), Irwindale, CA, substantial damage. Probable cause: THE PILOT'S MISJUDGMENT OF THE LANDING FLARE DURING A PRACTICE AUTOROTATION. All 101: https://openairdocs.org/model/enstrom-f-28c/ntsb.md ## FAA accident and incident reports (140, newest 50) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 20260202007429A](https://openairdocs.org/incident/20260202007429A), Feb 2, 2026: N5692Y, Leeds, UT, Substantial damage. Witnesses saw the pilot attempting to take off from his driveway for a local flight. The helicopter lifted off into a hover, which witnesses described as… - [Accident 20230305001809A](https://openairdocs.org/incident/20230305001809A), Mar 5, 2023: Enstrom F-28C (N5688R), Anchorage, AK, Substantial damage. On March 5, 2023, about 1400 Alaska standard time, an Enstrom F-28C helicopter, [privacy data omitted] sustained substantial damage when it was involved in an… - [Accident 20210908015469A](https://openairdocs.org/incident/20210908015469A), Sep 8, 2021: Enstrom F-28C (N51789), Toughkenamon, PA, Substantial damage. Pilot was hovering helicopter in a left to right crosswind. The pilot stated that he did not obtain a weather brief that day. He experienced tail rotor vortex… - [Incident 20190813015889I](https://openairdocs.org/incident/20190813015889I), Aug 13, 2019: Enstrom F-28C (N35ZE), Marion, IA, Minor damage. The pilot was circling to the right at approximately 100? AGL with forward speed of 20-30 knots. Entering the downwind side of a turn the helicopter was unable… - [Accident 20181007019559A](https://openairdocs.org/incident/20181007019559A), Oct 7, 2018: Enstrom F-28C (N5691Y), Bridgeville, DE, Substantial damage. Narrative: Facts or sequence of events that are relevant to the accident. From a position on the ground, the pilot increased throttle while increasing… - [Accident 20170719009939A](https://openairdocs.org/incident/20170719009939A), Jul 19, 2017: Enstrom F-28C (N5697B), Ontario, CA, Substantial damage. The pilot was on final approach to Chino Airport (cno). The pilot established a 100 foot descent rate and noticed the engine RPM was slightly above 2900 rpm's.… - [Accident 20150614009209A](https://openairdocs.org/incident/20150614009209A), Jun 14, 2015: Enstrom F-28C (N51778), Romeoville, IL, Substantial damage. Instructor with an airplane rated student returned from a local flight. Hovering was being taught. Student was performing pedal turns. At some point, the… - [Accident 20150313002269A](https://openairdocs.org/incident/20150313002269A), Mar 13, 2015: Enstrom F-28C (N5688N), Shelby, MT, Substantial damage. On March 13, 2015 at 1800 MST, a Enstrom F-28C impacted the ground 10 miles south of Shelby Montana behind a farmers house while hovering. Visual meteorlogical… - [Accident 20130927018949A](https://openairdocs.org/incident/20130927018949A), Sep 27, 2013: Enstrom F-28C (N631DP), Bloomsburg, PA, No damage, 1 fatal. Helicopter operator giving rides at local fair was in the process of a crew change (single pilot). Aircraft was on ground with the engine running and the main… - [Accident 20130423008929A](https://openairdocs.org/incident/20130423008929A), Apr 23, 2013: Enstrom F-28C (N51767), Lanesboro, IA, Substantial damage. The aircraft was conducting an aerial survey contracted by the Iowa department of natural resources (dnr). The purpose of the survey was to conduct a statewide… - [Accident 20121207027019A](https://openairdocs.org/incident/20121207027019A), Dec 7, 2012: Enstrom F-28C (N574H), Abilene, TX, Substantial damage. CFI was completing a dual cross country flight after a stop in brownwood for lunch before returned to Abilene, Texas (abi). Engine lost power, in cruise flight… - [Accident 20120220001709A](https://openairdocs.org/incident/20120220001709A), Feb 20, 2012: Enstrom F-28C (N51727), Kalispell, MT, Substantial damage. On February 20, 2012, about 1030 MST, an Enstrom F-28C helicopter, N51727, was substantially damaged following a loss of power and impact with terrain at the… - [Accident 20110623011789A](https://openairdocs.org/incident/20110623011789A), Jun 23, 2011: Enstrom F-28C (N5694A), Blair, NE, Substantial damage. Pilot and observer were conducting powerline patrol at 150 foot AGL. The pilot heard and felt a loud bang, followed by high vibrations and total loss of tail… - [Accident 20110226007779A](https://openairdocs.org/incident/20110226007779A), Feb 26, 2011: Enstrom F-28C (N5689B), Fort Pierce, FL, Substantial damage. The operater was performing helicopter rides at the st. lucie county fair. While performing his 18th ride in a row, on departure at approximately 250 feet the… - [Accident 20100206026929A](https://openairdocs.org/incident/20100206026929A), Feb 6, 2010: Enstrom F-28C (N426KA), Ft Pierce, FL, Substantial damage. On February 6, 2010, at 11:20 local time an Enstrom F28C, registered to [privacy data omitted] collided with the bank of a dry retention pond and the aircraft… - [Accident 20080418832179A](https://openairdocs.org/incident/20080418832179A), Apr 18, 2008: Enstrm F28C (N56895), Mosby, MO, Destroyed. (-23) While on left base to runway 18, the pilot experienced an engine failure. He immediately lowered the collective to initiate an autorotation. After… - [Accident 20051011027549A](https://openairdocs.org/incident/20051011027549A), Oct 11, 2005: Enstrm F28C (N51772), Smoketown, PA, Substantial damage. (-23) Solo student pilot conducting 360 degree hovering turns did not control the helicopter direction with anti-torque pedals. - [Accident 20050413006649A](https://openairdocs.org/incident/20050413006649A), Apr 13, 2005: Enstrm F28C (N5690K), Morrison, CO, Substantial damage. (-23) On April 13, 2005, at 17:00 MDT, N5690K, an Enstrom F-28C helicopter hit the landing pad at mount Morrison on landing. The PIC had a total of 113 hours… - [Accident 20041117028899A](https://openairdocs.org/incident/20041117028899A), Nov 17, 2004: Enstrm F28C (N595H), Panama City, FL, Substantial damage. (-23) Pilot stated he ran out of gas, also during the autorotation aircraft landed hard, tailboom broke off, skids broke, main rotor blades were destroyed. - [Incident 20031022029979I](https://openairdocs.org/incident/20031022029979I), Oct 22, 2003: Enstrm F28C (N77HX), Lapeer, MI. (-23) The tail rotor pitch control cable for the right pedal broke just forward of the tail rotor gear box. - [Accident 20030802028769A](https://openairdocs.org/incident/20030802028769A), Aug 2, 2003: Enstrm F28C (N15SA), Kankakee, IL, Substantial damage. (-23) During landing the pilot stated he lowered the collective while on firm and level ground and then the main rotorblades contacted the tailrotor drive… - [Accident 20030720036789A](https://openairdocs.org/incident/20030720036789A), Jul 20, 2003: Enstrm F28C (N51699), Waverly, IA, Substantial damage. (-23) As reported by the pilot, shortly after the accident. The helicopter took off from a Waverly parking lot, giving local area rides. At approx. 200' to… - [Accident 20021122033139A](https://openairdocs.org/incident/20021122033139A), Nov 22, 2002: Enstrm F28C (N552CS), Morrison, CO, Substantial damage. (-23) Pilot was attempting a landing at a helipad located at the fort restaurant in Morrison, CO. On approach the pilot was unable to distinguish the flag on… - [Accident 20020610013889A](https://openairdocs.org/incident/20020610013889A), Jun 10, 2002: Enstrm F28C (N5694Z), Medicinebow, WY, No damage. (-23) The pilot was about 100 feet above the ground making a down wind turn when the helicopter lost power. He then went into autorotation and impacted the… - [Accident 20020519013559A](https://openairdocs.org/incident/20020519013559A), May 19, 2002: Enstrm F28C (N51716), Stockton, CA, No damage. (-23) After being refueled, pilot lifted rotorcraft off from landing zone and hovered for a short period of time, negotiating a slight backwards movement to… - [Accident 20020420007659A](https://openairdocs.org/incident/20020420007659A), Apr 20, 2002: Enstrm F28C (N51769), Hotsprings, MT, No damage. (-23) Pilot stated that, after takeoff from a field near hot springs, MT, the helicopter began to settle back toward the ground. He thought the wind might have… - [Incident 20011229033859I](https://openairdocs.org/incident/20011229033859I), Dec 29, 2001: Enstrm F28C (N15SA), Dover, DE, Minor damage. (-23) Pilot was flying at 1800 ft. when he heard a noise coming from the engine. He then detected a burnt rubber odor. With that the pilot autorotated and… - [Accident 20010529014579A](https://openairdocs.org/incident/20010529014579A), May 29, 2001: Enstrm F28C (N83GT), Elizabeth, CO, No damage. (-23) Pilot was demonstrating steep approach from 6700 MSL. When throttle was added at about 100 feet AGL, there was no response. Autorotation was completed in… - [Accident 20010318003939A](https://openairdocs.org/incident/20010318003939A), Mar 18, 2001: Enstrm F28C (N637H), Hollister, CA, No damage. (.19) On March 18, 2001, at 1345 PST, an Enstrom F-28C, N637H, experienced a tail rotor strike, and rolled over, starting a fire in Hollister, California. The… - [Incident 20010316004849I](https://openairdocs.org/incident/20010316004849I), Mar 16, 2001: Enstrm F28C (N51789), Council Bluffs, IA, Minor damage. (-23) After departure from taxiway 31 the a/c turned and climbed high enough to clear trees. After clearing the trees the a/c descended while flying across an… - [Accident 20010310004519A](https://openairdocs.org/incident/20010310004519A), Mar 10, 2001: Enstrm F28C (N5687H), Orlando, FL, Destroyed. (-23) On Saturday evening, March 10, 2001, at approx. 20:15 EST, pilot [privacy data omitted]piloted his Enstrom F28C-2 helicopter on a sight-seeing tour with… - [Accident 20000630005329A](https://openairdocs.org/incident/20000630005329A), Jun 30, 2000: Enstrm F28C (N20PZ), Ravenna, OH, No damage. (-23) Helicopter crashed while attempting to land on runway 27 between runway lights #3 & #4. The helicopter rolled onto it's right side in the grass area just… - [Accident 20000608008779A](https://openairdocs.org/incident/20000608008779A), Jun 8, 2000: Enstrm F28C (N80193), Kennewick, WA, No damage. (-23) The pilot was hired to hover his heli over cherry trees to dry them off from a recent rain. In the process he stated that he experienced what appeared to… - [Accident 19991102030769A](https://openairdocs.org/incident/19991102030769A), Nov 2, 1999: Enstrm F28C (N635H), Pendleton, OR, Destroyed, 1 fatal. (.19) On November 2, 1999, at 1532 pacific standard time, an Enstrom F28C helicopter, N635H, was destroyed when it sustained a tail rotor blade strike during a… - [Incident 19990923031339I](https://openairdocs.org/incident/19990923031339I), Sep 23, 1999: Enstrm F28C (N539H), Fort Hall, ID. (-23) While in cruise with all engine instruments in normal operational limits, a dull bang was heard followed by a violent shaking of the helicopter. An… - [Accident 19990622007519A](https://openairdocs.org/incident/19990622007519A), Jun 22, 1999: Enstrm F28C (N595H), Kaunakakai Molo, HI, Substantial damage. (.4)The pilot reported the helicopter was running well with no mechanical difficulties. During an after dusk departure from a ranch, he encountered a dust… - [Accident 19990406003309A](https://openairdocs.org/incident/19990406003309A), Apr 6, 1999: Enstrm F28C (N51770), Pendleton, OR, Substantial damage. (.19) On April 6, 1999, approximately 1730 pacific daylight time, a main rotor blade of an Enstrom F-28-C helicopter, N51770, impacted the aircraft's tail boom… - [Accident 19980214006689A](https://openairdocs.org/incident/19980214006689A), Feb 14, 1998: Enstrm F28C (N5693M), Broomfield, CO, Substantial damage. Reported power loss. Autorotated 2 mile from bjc. No direct cause has been found. Investigated continuing. (.4)the pilot said he noticed that the low fuel… - [Accident 19971024030949A](https://openairdocs.org/incident/19971024030949A), Oct 24, 1997: Enstrm F28C (N1944J), Harrisburg, PA, Substantial damage. The helicopter was purchased and flown about 1 hour to another airport. The following day the pilot departed on a ferry flight. About 5 minutes after takeoff,… - [Incident 19970614020339I](https://openairdocs.org/incident/19970614020339I), Jun 14, 1997: Enstrm F28C (N191J), La Porte City, IA, Minor damage. Sightseeing flight struck a power line over river. Rotors cut line. Landed on river bank. Poles hid by trees. - [Accident 19970613014129A](https://openairdocs.org/incident/19970613014129A), Jun 13, 1997: Enstrm F28C (N5700J), Sharon, VT, Substantial damage. Helicopter struck power lines and crashed into the river. - [Accident 19970327003979A](https://openairdocs.org/incident/19970327003979A), Mar 27, 1997: Enstrm F28C (N294SB), Sacaton, AZ, Substantial damage. Lost partial power at etl on takeoff. Autorotated. Skid hit rock yawed. Tail hit tree. Air filter debris fouled. - [Incident 19970306007129I](https://openairdocs.org/incident/19970306007129I), Mar 6, 1997: Enstrm F28C (N5693M), Denver, CO, Minor damage. Narrative: flight instructor, tom wiesner, was giving his father, pat wiesner, flight instruction when the engine started running rough. Instructor tom wiesner… - [Accident 19970129000959A](https://openairdocs.org/incident/19970129000959A), Jan 29, 1997: Enstrm F28C (N51774), Angleton, TX, Destroyed. During practice approach lost partial engine power. Landed. Burst into flames. NR2 cyl burned thru. Exhaust on oil. (-23) a/c experienced slight loss of power… - [Incident 19961104041179I](https://openairdocs.org/incident/19961104041179I), Nov 4, 1996: Enstrm F28C (N5691Y), Allentown, PA. Narrative: while enroute to the marlboro airport, engine began running rough. Pilot executed emergency landing in a corn field located in the assunpink… - [Accident 19961005031049A](https://openairdocs.org/incident/19961005031049A), Oct 5, 1996: Enstrm F28C (N574H), Greenbluff, WA, Substantial damage. Aircraft was giving sight seeing rides when it lost power, landed hard. - [Accident 19960325007489A](https://openairdocs.org/incident/19960325007489A), Mar 25, 1996: Enstrm F28C (N56874), Defuniak Spring, FL, Destroyed. Flew into known fog at night. Failed to note descent in 180 turn. Struck trees. IFR weather existed at departure. - [Accident 19951006031299A](https://openairdocs.org/incident/19951006031299A), Oct 6, 1995: Enstrm F28C (N51786), Blue Ash, OH, Substantial damage. Hover taxi rearward from pad. Forgot parked helicopter to rear. Struck same. (-23) on October 6, 1995, at 1530 EDT, an Enstrom F28-C, N51786, registered to new… - [Incident 19950928030569I](https://openairdocs.org/incident/19950928030569I), Sep 28, 1995: Enstrm F28C (N5688N), Horseheads, NY, Minor damage. Dropped abruptly to ground just after liftoff. Pilot to be reexamined. - [Accident 19950910028349A](https://openairdocs.org/incident/19950910028349A), Sep 10, 1995: Enstrm F28C (N5689T), Livormore, CA, Destroyed, 1 fatal. Sightseeing rides at airshow. Lost power. Settled nose high to impact. Out of fuel. Gauge error. Failed autorotate. All 140: https://openairdocs.org/model/enstrom-f-28c/incidents.md ## Service difficulty reports (13) As reported by operators and repair stations, by the model named in the report. - [SDR 2022FA0000357](https://openairdocs.org/sdr/2022FA0000357), Jul 19, 2022: ENGINE. INTERMITTENT. ENGINE STARTED RUNNING ROUGH AFTER APPROXIMATELY 1000 FT PLANE RETURNED TO AIRPORT WITHOUT ANY FURTHER PROBLEMS. PLANE IS IN THE SHOP FOR EVALUATION. - [SDR AUS20020292](https://openairdocs.org/sdr/AUS20020292), Mar 20, 2002: BULKHEAD. DAMAGED. (AUS) TAIL BOOM BULKHEAD AND SKINS CRACKED. INCORRECT ANCHOR NUTFITTED. - [SDR AUS20020291](https://openairdocs.org/sdr/AUS20020291), Mar 20, 2002: SKIN. CRACKED. (AUS) TAIL CONE SKIN CRACKED IN AREA UNDER RADIO AERIAL. - [SDR AUS20010932](https://openairdocs.org/sdr/AUS20010932), Jul 26, 2001: TURBOCHARGER. FOD. (AUS) ENGINE TURBOCHARGER INGESTED A NUT FROM THE AIR STATIC TUBE LOCATED INSIDE THE AIR CLEANER. FOD. - [SDR 99ZZZX2072](https://openairdocs.org/sdr/99ZZZX2072), Apr 1, 1999: CONTROL CABLE. BROKEN. AT APPROXIMATELY 12 INCHES FORWARD OF THE TAIL ROTOR, THE LEFT TAIL ROTOR CONTROL CABLE BROKE. NO EVIDENCE OF RUBBING OR CHAFING. - [SDR CA980915013](https://openairdocs.org/sdr/CA980915013), Sep 2, 1998: FLEX COUPLING. CRACKED. (CAN) ONE CRACKED PLATE IN FLEX PACK ON 100 HR INSPECTION. - [SDR 97ZZZX3208](https://openairdocs.org/sdr/97ZZZX3208), May 16, 1997: SOCKET. CRACKED. AFTER GROUND RUN AND HOVER TO CHECK ENGINE PERFORMANCE, AIRCRAFT WAS LANDED AND COLLECTIVE WAS LOWERED TO SECURE FRICTION. MODERATE PRESSURE WAS APPLIED AND BEF - [SDR 97ZZZX1934](https://openairdocs.org/sdr/97ZZZX1934), Apr 1, 1997: VALVE GUIDE. FAILED. EXHAUST VALVE GUIDE BROKE UP LETTING THE EXHAUST VALVE LOOSEN IN THE CYLINDER. EXHAUST VALVE DID NOT FAIL. PIECES FROM THE GUIDE JAMMED THE TURBOCHARGER TURBINE - [SDR 97ZZZX964](https://openairdocs.org/sdr/97ZZZX964), Jan 29, 1997: CYLINDER. FAILED. ON A NIGHT TRAINING FLIGHT, NR 2 CYLINDER BLEW OUT ABOVE THE EXHAUST PORT. THE BLOW-OUT STEERED THE NR 4 CYLINDER OIL LINE AND STARTED A FIRE. AN EMERGENCY LAND - [SDR CA960522005](https://openairdocs.org/sdr/CA960522005), May 8, 1996: BLADE. DELAMINATION. (CAN) BLADE DELAMINATING IN MID PART OF BLADE TOWARDS LEADING EDGE. - [SDR 96ZZZX159](https://openairdocs.org/sdr/96ZZZX159), Dec 6, 1995: BOLT. FAILED. THE NR 3 ROD CAP SEPARATED FROM ROD. ROD BOLTS WERE DAMAGED TOO BADLY TO BE IDENTIFIED FOR SURE, BUT SHOULD BE PART NUMBER LISTED. THESE BOLTS HAVE STRETCH TORQ - [SDR 95ZZZX5535](https://openairdocs.org/sdr/95ZZZX5535), Sep 4, 1995: CONTACT POINTS. WORN FOLLOWER. ENGINE FAILED DUE TO BOTH SETS OF POINTS FAILING TO OPEN CAUSED BY EXCESSIVE WEAR OF PLASTIC CAM FOLLOWERS. SUSPECT LACK OF LUBRICATION AS NO OIL FOUND ON CAM O - [SDR 95ZZZX4024](https://openairdocs.org/sdr/95ZZZX4024), Jul 26, 1995: TUBE. DETACHED. HELICOPTER DEPARTED SCK AIRPORT AND MADE A FORCED LANDING IN A FIELD. INVESTIGATION FOUND AN INDUCTION TUBE HAD COME LOOSE. RECOMMEND DURING OVERHAUL, ALL TUBES ## STCs that may be installed (OpenAirDocs) (44) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SR03173CH](https://openairdocs.org/stc/SR03173CH): Installation of Isolair Innovator 11 Model 3900-280 Spray System. Isolair Inc - [STC SR00063DE](https://openairdocs.org/stc/SR00063DE): Installation of Inframetrics IRTV-445G infrared imaging system. Dart Aerospace Company - [STC SH492NW](https://openairdocs.org/stc/SH492NW): Installation of cargo racks Model 100 (rectangular) or Model 101(tapered) on each side. The ENSTROM Helicopter Corporation - [STC SH3319NM](https://openairdocs.org/stc/SH3319NM): Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,. Precise Flight Inc - [STC SA11137SC](https://openairdocs.org/stc/SA11137SC): Installation of Plane-Power ALT-FLX alternator. Hartzell Engine Technologies, LLC - [STC SH1461CE](https://openairdocs.org/stc/SH1461CE): Installation of a Nite Sign Model H47B-1 Electronic Aerial Billboard. Sky Sign Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SA02268CH](https://openairdocs.org/stc/SA02268CH): Installation of Airwolf Filter Corp. Air Oil Separator. Airwolf Filter Corporation - [STC SR02124SE](https://openairdocs.org/stc/SR02124SE): Installation functionality. of Data Garmin Required: transponders: (1) Garmin GTX Master 345/345R Drawing with List ADS-B (MDL), Out and In 005-00734-A4, functionality;. Garmin International Inc - [STC SR00359BO](https://openairdocs.org/stc/SR00359BO): Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights. Whelen Aerospace Technologies - [STC SR00568NY](https://openairdocs.org/stc/SR00568NY): Installation of remote mounted oil filter, model AFC-500 or AFC-600, and kit AFC-K014. Airwolf Filter Corporation - [STC SA2586NM](https://openairdocs.org/stc/SA2586NM): Installation of J.P. Instruments temperature monitoring systems. J P Instruments - [STC SR02487AK](https://openairdocs.org/stc/SR02487AK): Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System. ADS-B Technologies, LLC - [STC SR02470AK](https://openairdocs.org/stc/SR02470AK): Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System. ADS-B Technologies, LLC - [STC SR02471AK](https://openairdocs.org/stc/SR02471AK): Installation of the L-3 Communications NGT -9000/9000R ADS-B System. ADS-B Technologies, LLC - [STC SR03465CH](https://openairdocs.org/stc/SR03465CH): Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-ECD-084-280, or AA-ECD-084-480. Airwolf Aerospace LLC - [STC SR03520NY](https://openairdocs.org/stc/SR03520NY): Installation of Rotor Head Cover. Spitfire Aerospace, LLC - [STC SR02394AK](https://openairdocs.org/stc/SR02394AK): Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system. Seaplanes North LLC - [STC SH4061NM](https://openairdocs.org/stc/SH4061NM): Installation of Pneumatic Door Actuators. Air Comm Corporation - [STC SR03353CH](https://openairdocs.org/stc/SR03353CH): Installation of Aspen Avionics Evolution Primary and Multi-Functional Flight Displays. AspenSTC Inc - [STC SR02232LA](https://openairdocs.org/stc/SR02232LA): Installation of Garmin Model 400W / 500W Series GPS-WAAS Navigation System. Garmin AT Inc - [STC SA00068SE](https://openairdocs.org/stc/SA00068SE): Installation of fuel flow/pressure instruments. (W/TSIO-360-MB1). Electronics International Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA4172NM](https://openairdocs.org/stc/SA4172NM): Installation of Aviation Development oil filter. Aviation Development Corporation - [STC SA02033AT](https://openairdocs.org/stc/SA02033AT): Modification to install an air-oil separator to prevent oil from being aspirated from the engine breather line. M-20 Oil Separators LLC - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. Electronics International - [STC SR01430LA](https://openairdocs.org/stc/SR01430LA): Installation of Stainless Steel Skid shoes. Papas Gary Los Angeles Laboratories Inc - [STC SA02520AT](https://openairdocs.org/stc/SA02520AT): Installation of M-20 Oil Separator, model 600-WP. M-20 Oil Separators LLC - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc - [STC SA00061LA](https://openairdocs.org/stc/SA00061LA): Installation of JPI digital tachometer. J P Instruments - [STC SA00238SE](https://openairdocs.org/stc/SA00238SE): Installation of Aviation Development Corporation's sump mounted chip detector. Aviation Development Corporation - [STC SR00179DE](https://openairdocs.org/stc/SR00179DE): Installation of Oilamatic preoiler system. Oilamatic Inc - [STC SA1626NM PAGE 1](https://openairdocs.org/stc/SA1626NM%20PAGE%201): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA2350NM PAGE 1](https://openairdocs.org/stc/SA2350NM%20PAGE%201): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SA3862NM PAGE 1](https://openairdocs.org/stc/SA3862NM%20PAGE%201): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. Electronics International - [STC SA2867NM](https://openairdocs.org/stc/SA2867NM): Installation of Turboplus/ Electronics Int'l digital temperature gauges. Turboplus, Inc. Lists F-28 Series - [STC SA2190NM PAGE 1](https://openairdocs.org/stc/SA2190NM%20PAGE%201): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International - [STC SH4803SW](https://openairdocs.org/stc/SH4803SW): Install electroformed nickel leading edge protective strip on main rotor blade. Composite Technics, Inc. Lists F-28 Series - [STC SH592GL](https://openairdocs.org/stc/SH592GL): Install Tayburn Electronics microwave antennae, microwave transmitter, and microwave receiver to landing gear skid. Airborne Microwave, Inc - [STC SH1434NM](https://openairdocs.org/stc/SH1434NM): Installation of aluminum snow shoes. Lewis W Hart - [STC SH628NW](https://openairdocs.org/stc/SH628NW): Installation of Nite Sign Aerial Advertising Equipment. 5 J's Aviation - [STC SA2386SW](https://openairdocs.org/stc/SA2386SW): Installation of S.A.F.E., EGT, CHT Systems. Avicon Development Corporation - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. Electronics International --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.