# Allison 250-C47 series - Type: Engine model (FAA registry) - Registry code: 03029 - Manufacturer (registry): ALLISON - Model: 250-C47 - Engine type: Turbo-shaft - Power: 600 hp - Data sheet: [TCDS E1GL](https://openairdocs.org/tcds/E1GL) (OpenAirDocs) - Holder: Rolls-Royce Corporation - Installed in: 123 registered aircraft - Page: https://openairdocs.org/engine/allison-250-c47-series The registry names only the engine series, so ADs for every model in the series are matched. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2006-20-07](https://openairdocs.org/ad/2006-20-07): Adds an additional life limit for third- and fourth-stage turbine wheels · Rolls-Royce 250-C30, 250-C30G, 250-C30G/2 and 11 more. Effective Nov 2, 2006 - [AD 2006-16-04](https://openairdocs.org/ad/2006-16-04): Inspection of the fuel nozzle screen · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Sep 7, 2006 - [AD 2004-24-04](https://openairdocs.org/ad/2004-24-04): Hydromechanical unit (HMU) Power Lever Angle (PLA) potentiometer · Rolls-Royce 250-C30R/3, 250-C30R/3M, 250-C47B and 1 more. Effective Jan 3, 2005 - [AD 98-10-03](https://openairdocs.org/ad/98-10-03): Hydromechanical Unit · Rolls-Royce 250-C47B. Effective May 26, 1998 - [AD 82-24-05](https://openairdocs.org/ad/82-24-05): Control Assembly and Power Turbine Governor Assembly · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 43 more. Effective Nov 26, 1982 Historical (superseded or no longer in force): - [AD 2004-24-09](https://openairdocs.org/ad/2004-24-09) (historical): Fuel nozzle · Rolls-Royce 250-B15A, 250-B15E, 250-B15G and 40 more. Effective Jan 5, 2005 - [AD 2003-13-10](https://openairdocs.org/ad/2003-13-10) (historical): Hydromechanical unit (HMU) power lever angle (PLA) · 250-C30R/3, 250-C30R/3M, 250-C47B and 1 more. Effective Jul 15, 2003 - [AD 97-21-09](https://openairdocs.org/ad/97-21-09) (historical): Engine Main Electrical Harness Assembly · 250-C47B. Effective Dec 3, 1997 - [AD 96-24-09](https://openairdocs.org/ad/96-24-09) (historical): Engine Main Electrical Harness Assembly · 250-C47B. Effective Nov 25, 1996 ## Information bulletins (advisory) (3) - [SAIB NE-06-52](https://openairdocs.org/saib/NE-06-52): . Issued Jul 6, 2006 - [SAIB NE-06-12R1](https://openairdocs.org/saib/NE-06-12R1): . Issued Jan 13, 2006 - [SAIB NE-06-12](https://openairdocs.org/saib/NE-06-12) (historical): . Issued Dec 2, 2005 ## Registered aircraft (123, first 50) - [N101HF](https://openairdocs.org/aircraft/N101HF): [Air Methods LLC](https://openairdocs.org/faa-owner/AIR%20METHODS%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 2000, S/N 53463 - [N11SP](https://openairdocs.org/aircraft/N11SP): [State Of New York](https://openairdocs.org/faa-owner/STATE%20OF%20NEW%20YORK), [Albany, NY](https://openairdocs.org/faa-place/NY/Albany), built 2002, S/N 53530 - [N12HX](https://openairdocs.org/aircraft/N12HX): [Helicopter Express LLC](https://openairdocs.org/faa-owner/HELICOPTER%20EXPRESS%20LLC), [Chamblee, GA](https://openairdocs.org/faa-place/GA/Chamblee), built 2000, S/N 53415 - [N137PD](https://openairdocs.org/aircraft/N137PD): [Puerto Rico Police Department](https://openairdocs.org/faa-owner/PUERTO%20RICO%20POLICE%20DEPARTMENT), [San Juan, PR](https://openairdocs.org/faa-place/PR/San%20Juan), built 2000, S/N 53431 - [N14HX](https://openairdocs.org/aircraft/N14HX): [Helicopter Express LLC](https://openairdocs.org/faa-owner/HELICOPTER%20EXPRESS%20LLC), [Chamblee, GA](https://openairdocs.org/faa-place/GA/Chamblee), built 1997, S/N 53184 - [N165SP](https://openairdocs.org/aircraft/N165SP): [Southern Utah University](https://openairdocs.org/faa-owner/SOUTHERN%20UTAH%20UNIVERSITY), [Cedar City, UT](https://openairdocs.org/faa-place/UT/Cedar%20City), built 2000, S/N 53458 - [N168TB](https://openairdocs.org/aircraft/N168TB): [Southwest Aviation Enterprises](https://openairdocs.org/faa-owner/SOUTHWEST%20AVIATION%20ENTERPRISES), [Haslet, TX](https://openairdocs.org/faa-place/TX/Haslet), built 2000, S/N 53434 - [N16SP](https://openairdocs.org/aircraft/N16SP): [State Of New York](https://openairdocs.org/faa-owner/STATE%20OF%20NEW%20YORK), [Albany, NY](https://openairdocs.org/faa-place/NY/Albany), built 2002, S/N 53532 - [N179SF](https://openairdocs.org/aircraft/N179SF): [N179sf LLC](https://openairdocs.org/faa-owner/N179SF%20LLC), [Chandler, AZ](https://openairdocs.org/faa-place/AZ/Chandler), built 1996, S/N 53196 - [N17SP](https://openairdocs.org/aircraft/N17SP): [New York State Police](https://openairdocs.org/faa-owner/NEW%20YORK%20STATE%20POLICE), [Albany, NY](https://openairdocs.org/faa-place/NY/Albany), built 2000, S/N 53444 - [N1903A](https://openairdocs.org/aircraft/N1903A): [Dale County Sheriffs Office](https://openairdocs.org/faa-owner/DALE%20COUNTY%20SHERIFFS%20OFFICE), [Ozark, AL](https://openairdocs.org/faa-place/AL/Ozark), built 2001, S/N 53475 - [N203HA](https://openairdocs.org/aircraft/N203HA): [Helo N203ha LLC](https://openairdocs.org/faa-owner/HELO%20N203HA%20LLC), [Richmond, VA](https://openairdocs.org/faa-place/VA/Richmond), built 1996, S/N 53023 - [N20BH](https://openairdocs.org/aircraft/N20BH): [Chemair Helicopters Inc](https://openairdocs.org/faa-owner/CHEMAIR%20HELICOPTERS%20INC), [Jefferson, WI](https://openairdocs.org/faa-place/WI/Jefferson), built 1998, S/N 53242 - [N20WH](https://openairdocs.org/aircraft/N20WH): [Gulf Helicopters LLC](https://openairdocs.org/faa-owner/GULF%20HELICOPTERS%20LLC), [Santa Fe, TX](https://openairdocs.org/faa-place/TX/Santa%20Fe), built 1999, S/N 53377 - [N219BH](https://openairdocs.org/aircraft/N219BH): [Osceola County Sheriffs Office](https://openairdocs.org/faa-owner/OSCEOLA%20COUNTY%20SHERIFFS%20OFFICE), [Kissimmee, FL](https://openairdocs.org/faa-place/FL/Kissimmee), built 2002, S/N 53525 - [N21BH](https://openairdocs.org/aircraft/N21BH): [Chemair Helicopters Inc](https://openairdocs.org/faa-owner/CHEMAIR%20HELICOPTERS%20INC), [Jefferson, WI](https://openairdocs.org/faa-place/WI/Jefferson), built 1998, S/N 53262 - [N2222L](https://openairdocs.org/aircraft/N2222L): [Lott Jeff S](https://openairdocs.org/faa-owner/LOTT%20JEFF%20S), [Post, TX](https://openairdocs.org/faa-place/TX/Post), built 1998, S/N 53306 - [N262KB](https://openairdocs.org/aircraft/N262KB): [Skytoyz Enterprises LLC](https://openairdocs.org/faa-owner/SKYTOYZ%20ENTERPRISES%20LLC), [Loveland, CO](https://openairdocs.org/faa-place/CO/Loveland), built 1999, S/N 53380 - [N267SF](https://openairdocs.org/aircraft/N267SF): [N179sf LLC](https://openairdocs.org/faa-owner/N179SF%20LLC), [Chandler, AZ](https://openairdocs.org/faa-place/AZ/Chandler), built 1996, S/N 53102 - [N26CH](https://openairdocs.org/aircraft/N26CH): [Coastal Air Service Inc](https://openairdocs.org/faa-owner/COASTAL%20AIR%20SERVICE%20INC), [Panama City, FL](https://openairdocs.org/faa-place/FL/Panama%20City), built 1998, S/N 53312 - [N309RL](https://openairdocs.org/aircraft/N309RL): [Rotorcraft Leasing Company LLC](https://openairdocs.org/faa-owner/ROTORCRAFT%20LEASING%20COMPANY%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1996, S/N 53092 - [N30VA](https://openairdocs.org/aircraft/N30VA): [Commonwealth Of Virginia](https://openairdocs.org/faa-owner/COMMONWEALTH%20OF%20VIRGINIA), [Richmond, VA](https://openairdocs.org/faa-place/VA/Richmond), built 2000, S/N 53453 - [N311DJ](https://openairdocs.org/aircraft/N311DJ): [Autonomy Aerospace LLC](https://openairdocs.org/faa-owner/AUTONOMY%20AEROSPACE%20LLC), [Bayamon, PR](https://openairdocs.org/faa-place/PR/Bayamon), S/N 53440 - [N3191](https://openairdocs.org/aircraft/N3191): [Gm Leasing Co LLC](https://openairdocs.org/faa-owner/GM%20LEASING%20CO%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1997, S/N 53211 - [N342AE](https://openairdocs.org/aircraft/N342AE): [Air Evac Ems Inc](https://openairdocs.org/faa-owner/AIR%20EVAC%20EMS%20INC), [O Fallon, MO](https://openairdocs.org/faa-place/MO/O%20Fallon), built 1997, S/N 53226 - [N34BM](https://openairdocs.org/aircraft/N34BM): [Gulf Helicopters LLC](https://openairdocs.org/faa-owner/GULF%20HELICOPTERS%20LLC), [Santa Fe, TX](https://openairdocs.org/faa-place/TX/Santa%20Fe), built 1998, S/N 53310 - [N34VA](https://openairdocs.org/aircraft/N34VA): [Commonwealth Of Virginia](https://openairdocs.org/faa-owner/COMMONWEALTH%20OF%20VIRGINIA), [Richmond, VA](https://openairdocs.org/faa-place/VA/Richmond), built 2000, S/N 53454 - [N35L](https://openairdocs.org/aircraft/N35L): [Westwind Helicopters Inc](https://openairdocs.org/faa-owner/WESTWIND%20HELICOPTERS%20INC), [Santa Fe, TX](https://openairdocs.org/faa-place/TX/Santa%20Fe), built 2000, S/N 53402 - [N36VA](https://openairdocs.org/aircraft/N36VA): [Commonwealth Of Virginia](https://openairdocs.org/faa-owner/COMMONWEALTH%20OF%20VIRGINIA), [N Chesterfield, VA](https://openairdocs.org/faa-place/VA/N%20Chesterfield), built 2001, S/N 53472 - [N373RL](https://openairdocs.org/aircraft/N373RL): [Rotorcraft Leasing Company LLC](https://openairdocs.org/faa-owner/ROTORCRAFT%20LEASING%20COMPANY%20LLC), [Broussard, LA](https://openairdocs.org/faa-place/LA/Broussard), built 1999, S/N 53373 - [N390SF](https://openairdocs.org/aircraft/N390SF): [N390sf LLC](https://openairdocs.org/faa-owner/N390SF%20LLC), [Chandler, AZ](https://openairdocs.org/faa-place/AZ/Chandler), built 2000, S/N 53407 - [N402PJ](https://openairdocs.org/aircraft/N402PJ): [Helibro LLC](https://openairdocs.org/faa-owner/HELIBRO%20LLC), [Red Bluff, CA](https://openairdocs.org/faa-place/CA/Red%20Bluff), built 1997, S/N 53195 - [N403AP](https://openairdocs.org/aircraft/N403AP): [A & P Helicopters Inc](https://openairdocs.org/faa-owner/A%20%26%20P%20HELICOPTERS%20INC), [Richvale, CA](https://openairdocs.org/faa-place/CA/Richvale), built 2000, S/N 53424 - [N403PH](https://openairdocs.org/aircraft/N403PH): [Phi Health LLC](https://openairdocs.org/faa-owner/PHI%20HEALTH%20LLC), [Tempe, AZ](https://openairdocs.org/faa-place/AZ/Tempe), built 1998, S/N 53267 - [N403PJ](https://openairdocs.org/aircraft/N403PJ): [Helibro LLC](https://openairdocs.org/faa-owner/HELIBRO%20LLC), [Red Bluff, CA](https://openairdocs.org/faa-place/CA/Red%20Bluff), built 1998, S/N 53256 - [N404AP](https://openairdocs.org/aircraft/N404AP): [A & P Helicopters Inc](https://openairdocs.org/faa-owner/A%20%26%20P%20HELICOPTERS%20INC), [Richvale, CA](https://openairdocs.org/faa-place/CA/Richvale), built 1997, S/N 53228 - [N404LL](https://openairdocs.org/aircraft/N404LL): [Rocky Mountain Holdings LLC](https://openairdocs.org/faa-owner/ROCKY%20MOUNTAIN%20HOLDINGS%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 2000, S/N 53446 - [N404PH](https://openairdocs.org/aircraft/N404PH): [Phi Health LLC](https://openairdocs.org/faa-owner/PHI%20HEALTH%20LLC), [Tempe, AZ](https://openairdocs.org/faa-place/AZ/Tempe), built 1997, S/N 53188 - [N405LH](https://openairdocs.org/aircraft/N405LH): [Lohman Helicopter LLC](https://openairdocs.org/faa-owner/LOHMAN%20HELICOPTER%20LLC), [Lewiston, ID](https://openairdocs.org/faa-place/ID/Lewiston), built 1998, S/N 53240 - [N406PH](https://openairdocs.org/aircraft/N406PH): [Phi Health LLC](https://openairdocs.org/faa-owner/PHI%20HEALTH%20LLC), [Tempe, AZ](https://openairdocs.org/faa-place/AZ/Tempe), built 1997, S/N 53198 - [N406PJ](https://openairdocs.org/aircraft/N406PJ): [Helibro LLC](https://openairdocs.org/faa-owner/HELIBRO%20LLC), [Red Bluff, CA](https://openairdocs.org/faa-place/CA/Red%20Bluff), built 2000, S/N 53466 - [N407AM](https://openairdocs.org/aircraft/N407AM): [Air Methods LLC](https://openairdocs.org/faa-owner/AIR%20METHODS%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 1998, S/N 53309 - [N407BP](https://openairdocs.org/aircraft/N407BP): [Bell Textron Inc](https://openairdocs.org/faa-owner/BELL%20TEXTRON%20INC), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1999, S/N 53355 - [N407CR](https://openairdocs.org/aircraft/N407CR): [Med-Trans Corp](https://openairdocs.org/faa-owner/MED-TRANS%20CORP), [Denton, TX](https://openairdocs.org/faa-place/TX/Denton), built 1998, S/N 53254 - [N407DB](https://openairdocs.org/aircraft/N407DB): [Brock Bell LLC](https://openairdocs.org/faa-owner/BROCK%20BELL%20LLC), [Beaumont, TX](https://openairdocs.org/faa-place/TX/Beaumont), built 2000, S/N 53419 - [N407GF](https://openairdocs.org/aircraft/N407GF): [Georgia Forestry Commission](https://openairdocs.org/faa-owner/GEORGIA%20FORESTRY%20COMMISSION), [Macon, GA](https://openairdocs.org/faa-place/GA/Macon), built 2000, S/N 53452 - [N407J](https://openairdocs.org/aircraft/N407J): [Haiti Air Ambulance Service Inc](https://openairdocs.org/faa-owner/HAITI%20AIR%20AMBULANCE%20SERVICE%20INC), [Melville, NY](https://openairdocs.org/faa-place/NY/Melville), built 2001, S/N 53486 - [N407LE](https://openairdocs.org/aircraft/N407LE): [Guardian Helicopters Inc](https://openairdocs.org/faa-owner/GUARDIAN%20HELICOPTERS%20INC), [Fillmore, CA](https://openairdocs.org/faa-place/CA/Fillmore), built 1999, S/N 53391 - [N407LN](https://openairdocs.org/aircraft/N407LN): [Air Methods LLC](https://openairdocs.org/faa-owner/AIR%20METHODS%20LLC), [Greenwood Village, CO](https://openairdocs.org/faa-place/CO/Greenwood%20Village), built 1997, S/N 53181 - [N407PJ](https://openairdocs.org/aircraft/N407PJ): [P J Helicopters Inc](https://openairdocs.org/faa-owner/P%20J%20HELICOPTERS%20INC), [Red Bluff, CA](https://openairdocs.org/faa-place/CA/Red%20Bluff), built 2001, S/N 53469 All 123: https://openairdocs.org/engine/allison-250-c47-series/aircraft.md ## NTSB investigations (60, 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 WPR26LA062](https://openairdocs.org/ntsb/WPR26LA062), Dec 15, 2025: Bell 407 (N404LL), Las Vegas, NV, substantial damage. Probable cause: Tail rotor blade impact from an unidentified object at an undetermined time. - [NTSB CEN25LA380](https://openairdocs.org/ntsb/CEN25LA380), Sep 16, 2025: Bell 407 (N407WA), Decatur, TX, substantial damage. Probable cause: The instructor candidate’s erroneous operation of the throttle during an autorotation from altitude with power recovery, which resulted in a hard landing. - [NTSB GAA25WA242](https://openairdocs.org/ntsb/GAA25WA242), Aug 15, 2025: MD Helicopters 600N (N600MW), Storrington, United Kingdom, substantial damage - [NTSB GAA25WA129](https://openairdocs.org/ntsb/GAA25WA129), Mar 21, 2025: Mcdonnell Douglas Helicopter 600 (N511VA), Dos Ríos, Mexico, substantial damage - [NTSB WPR24LA265](https://openairdocs.org/ntsb/WPR24LA265), Aug 3, 2024: Bell 407 (N20BH), Raft River, ID, substantial damage. Probable cause: The pilot’s misdiagnosis of an erroneous engine instrument indication and his subsequent decision to enter an autorotation, which resulted in a hard landing due to degraded visual cues and low… - [NTSB CEN24LA271](https://openairdocs.org/ntsb/CEN24LA271), Jul 16, 2024: Mcdonnell Douglas Helicopter 600N (N609RP), Eagle Lake, TX, destroyed. Probable cause: The operator’s improper installation of the fuel system, which resulted in fuel starvation, a loss of engine power, and impact with terrain. - [NTSB WPR24LA247](https://openairdocs.org/ntsb/WPR24LA247), Jul 11, 2024: Bell 407 (N21BH), Stanley, ID, substantial damage. Probable cause: A sudden wind shift which resulted in a rapid descent and subsequent dynamic rollover and collision into water. - [NTSB CEN23FA019](https://openairdocs.org/ntsb/CEN23FA019), Oct 26, 2022: Bell 407 (N34BM), Morgan City, LA, destroyed, 1 fatal. Probable cause: The pilot’s loss of consciousness due to a cardiovascular event. - [NTSB WPR22LA333](https://openairdocs.org/ntsb/WPR22LA333), Sep 4, 2022: Bell 407 (N687AM), Mount Baldy, CA, substantial damage. Probable cause: The pilot’s failure to ensure the throttle was properly positioned before commencing an approach to land, which resulted in a low rotor rpm condition and impact with terrain. Contributing to the… - [NTSB ANC22FA041](https://openairdocs.org/ntsb/ANC22FA041), Jun 9, 2022: Bell 407 (N402SH), Kalea, HI, substantial damage. Probable cause: The in-flight separation of the tail boom as a result of abnormal loading and fracture of the upper-left tail boom attachment bolt due to a gap between the upper-left longeron and aft fuselage… - [NTSB CEN22FA100](https://openairdocs.org/ntsb/CEN22FA100), Jan 14, 2022: Bell 407 (N167RL), Houma, LA, destroyed, 2 fatal. Probable cause: The pilot’s sudden loss of consciousness for undetermined reasons during cruise flight, which resulted in a loss of control and impact with terrain. - [NTSB CEN21LA116](https://openairdocs.org/ntsb/CEN21LA116), Jan 22, 2021: Mcdonnell Douglas Helicopter 600N (N60BK), Mankato, MN, substantial damage. Probable cause: The pilot’s loss of situational awareness while landing, resulting in an impact with power lines. - [NTSB WPR20LA235](https://openairdocs.org/ntsb/WPR20LA235), Jul 21, 2020: Mcdonnell Douglas 600 (N208MP), Thompson Falls, MT, substantial damage. Probable cause: A partial loss of engine power for reasons that could not be determined based on available evidence. - [NTSB WPR20LA228](https://openairdocs.org/ntsb/WPR20LA228), Jul 20, 2020: Md Helicopter 600 (N745BW), San Andreas, CA, destroyed. Probable cause: The failure of the output shaft of the overrunning clutch inner race due to frictional overheating of the shaft, which resulted from the failure of the output bearing’s stainless-steel grease seal. - [NTSB CEN20LA068](https://openairdocs.org/ntsb/CEN20LA068), Jan 22, 2020: Bell 407 (N947LH), Minot, ND, substantial damage. Probable cause: The pilot's failure to maintain clearance from fencing around the landing pad during landing, which resulted in the tail rotor contacting the fence. - [NTSB ERA20FA056](https://openairdocs.org/ntsb/ERA20FA056), Dec 25, 2019: Bell 407 (N663SF), Headland, AL, substantial damage, 1 fatal. Probable cause: Pilot incapacitation by a sudden cardiac event related to severe coronary artery disease, which resulted in a loss of helicopter control. - [NTSB CEN20FA035](https://openairdocs.org/ntsb/CEN20FA035), Dec 7, 2019: Bell 407 (N79LP), Gulf of Mexico (Gulf of Mexico), destroyed, 2 fatal. Probable cause: A total loss of engine power due to the failure of the engine’s Nos. 3 and 4 bearings and the power turbine pinion gear, and subsequent loss of main rotor rpm, which resulted in a loss of control and… - [NTSB CEN19FA095](https://openairdocs.org/ntsb/CEN19FA095), Mar 10, 2019: Bell 407 (N577AL), Galliano, LA, destroyed, 2 fatal. Probable cause: The pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions. - [NTSB ERA18FA122](https://openairdocs.org/ntsb/ERA18FA122), Apr 8, 2018: MD Helicopter 600 (N602BP), Smethport, PA, destroyed, 2 fatal. Probable cause: The helicopter pilot's failure to maintain adequate clearance during power line construction work, which resulted in the helicopter's main rotor striking and becoming entangled with a wire and a… - [NTSB CEN17FA112](https://openairdocs.org/ntsb/CEN17FA112), Feb 27, 2017: Bell 407 (N1371), Chauvin, LA, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain proper altitude resulting in a collision with water for reasons that could not be determined based on the available information. - [NTSB CEN16LA386](https://openairdocs.org/ntsb/CEN16LA386), Sep 29, 2016: Bell 407 (N361SF), Lawton, OK, substantial damage. Probable cause: The pilot's loss of helicopter control during landing, which resulted in a hard landing and collision with a wall. - [NTSB WPR16LA081](https://openairdocs.org/ntsb/WPR16LA081), Feb 5, 2016: Mcdonnell Douglas Helicopter 600N (N745BW), Ashland, OR, substantial damage. Probable cause: Fatigue cracking of a main rotor blade for reasons that could not be determined based on the available information. - [NTSB WPR16FA037](https://openairdocs.org/ntsb/WPR16FA037), Dec 11, 2015: Bell 407 (N408FC), McFarland, CA, destroyed, 4 fatal. Probable cause: The pilot's loss of control and collision with terrain while attempting a course reversal after inadvertently entering an area of reduced visibility weather conditions. Contributing to the accident… - [NTSB CEN16LA058](https://openairdocs.org/ntsb/CEN16LA058), Dec 7, 2015: Mcdonnell Douglas Helicopter 600N (N607BP), Angleton, TX, substantial damage. Probable cause: A loss of control while hovering for reasons that could not be determined, because postaccident examination revealed no mechanical anomalies or failures that would have precluded normal operation. - [NTSB CEN16LA027](https://openairdocs.org/ntsb/CEN16LA027), Nov 3, 2015: Bell 407 (N496AE), San Antonio, TX, substantial damage. Probable cause: The failure of the No. 3 tail rotor adapter and shaft due to a loss of torque on the retaining nut. Contributing to the accident was the lack of a requirement to inspect the tail rotor assembly for… - [NTSB CEN15LA265](https://openairdocs.org/ntsb/CEN15LA265), Jun 8, 2015: Bell 407 (N501PH), Pecan Island, LA, substantial damage. Probable cause: The fatigue fracture of the tail rotor gearbox attachment studs, which resulted in a loss of tail rotor control and a subsequent hard landing. - [NTSB GAA15CA002](https://openairdocs.org/ntsb/GAA15CA002), Mar 5, 2015: Bell 407 (N41BH), Justin, TX, substantial damage. Probable cause: Abnormal ground contact during an autorotation demonstration, resulting in a severed tailrotor driveshaft. - [NTSB CEN15IA046](https://openairdocs.org/ntsb/CEN15IA046), Nov 11, 2014: Bell 407 (N373RL), Viosca Knoll 989, incident, no damage. Probable cause: Engine power surges during takeoff for reasons that could not be determined during postaccident testing of the engine and the engine control unit. - [NTSB CEN14FA232](https://openairdocs.org/ntsb/CEN14FA232), May 3, 2014: Bell 407 (N407MH), Telluride, CO, substantial damage. Probable cause: The failure of the power turbine thrust (No. 5) bearing due to overheating as a result of oil starvation, which led to the engine failure. Also causal to the accident was an undocumented repair to… - [NTSB WPR14LA173](https://openairdocs.org/ntsb/WPR14LA173), Apr 27, 2014: Mcdonnell Douglas Helicopter 600N (N606BP), Adelanto, CA, substantial damage. Probable cause: The commercial pilot’s improper control inputs, which resulted in a loss of helicopter control during takeoff. - [NTSB CEN13FA491](https://openairdocs.org/ntsb/CEN13FA491), Aug 13, 2013: Bell 407 (N53LP), Ship Shoal 208H (Gulf of Mexico), substantial damage. Probable cause: The ingestion of vented methane gas into the helicopter’s engine during takeoff, which caused an engine compressor surge that led to a total loss of engine power. - [NTSB CEN13FA003](https://openairdocs.org/ntsb/CEN13FA003), Oct 5, 2012: Bell 407 (N406AL), Intracoastal City, LA, substantial damage, 1 fatal. Probable cause: The pilot’s decision to attempt a local flight in marginal visual meteorological conditions and his subsequent loss of control following an inadvertent encounter with instrument metrological… - [NTSB ERA12TA538](https://openairdocs.org/ntsb/ERA12TA538), Aug 31, 2012: Bell 407 (N11SP), Bath, NY, substantial damage. Probable cause: The pilot's improper recovery from an in-flight upset, which resulted in the main rotor striking and separating the tail boom. Contributing to the accident was the helicopter manufacturer's failure… - [NTSB ANC12FA084](https://openairdocs.org/ntsb/ANC12FA084), Aug 8, 2012: Mcdonnell Douglas Helicopter 600N (N737TV), Delta Junction, AK, substantial damage, 1 fatal. Probable cause: The pilot’s failure to clear the left landing gear skid, which resulted in the entanglement of the left landing gear skid with a log, and his subsequent application of collective pitch, which… - [NTSB CEN12LA242](https://openairdocs.org/ntsb/CEN12LA242), Apr 14, 2012: Bell 407 (N509MT), Aberdeen, SD, substantial damage. Probable cause: The fatigue failure of two turbine engine blades due to vibration. - [NTSB WPR09GA119](https://openairdocs.org/ntsb/WPR09GA119), Feb 20, 2009: Mcdonnell Douglas Helicopter 600 (N608BP), San Clemente, CA, substantial damage. Probable cause: Failure of the engine’s number two bearing during cruise flight, which resulted in a loss of engine power. - [NTSB DEN08MA116](https://openairdocs.org/ntsb/DEN08MA116), Jun 29, 2008: Bell 407 (N407MJ), Flagstaff, AZ, destroyed, 7 fatal. Probable cause: Both helicopter pilots’ failure to see and avoid the other helicopter on approach to the helipad. Contributing to the accident were the failure of N407GA’s pilot to follow flight arrival route… - [NTSB CHI08CA098](https://openairdocs.org/ntsb/CHI08CA098), Mar 26, 2008: McDonnell Douglas 600N (N160KC), Waverly, OH, substantial damage. Probable cause: The pilot's improper flare. - [NTSB DFW08IA045](https://openairdocs.org/ntsb/DFW08IA045), Dec 15, 2007: Bell 407 (N407AK), Hig Island A595, incident, no damage. Probable cause: The loss of tail rotor effectiveness for undetermined reasons. - [NTSB NYC07FA048](https://openairdocs.org/ntsb/NYC07FA048), Dec 14, 2006: Bell 407 (N407JJ), Dagsboro, DE, substantial damage, 2 fatal. Probable cause: The pilot's improper decision to depart under visual flight rules into night instrument meteorological conditions. Contributing to the accident was the fog and the dark night conditions. - [NTSB DFW05FA040](https://openairdocs.org/ntsb/DFW05FA040), Dec 17, 2004: Bell 407 (N976AA), Ship Shoal 130E, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain clearance with a stationary object while maneuvering for landing. Contributing factors were the inadequate facilities available for landing, the pilot's lack of… - [NTSB SEA04MA167](https://openairdocs.org/ntsb/SEA04MA167), Aug 22, 2004: Bell 407 (N2YN), Battle Mountain, NV, destroyed, 5 fatal. Probable cause: The pilot's failure to maintain clearance from mountainous terrain. Contributing factors were the pilot's improper decision to take the direct route over mountainous terrain, the dark night… - [NTSB CHI04MA182](https://openairdocs.org/ntsb/CHI04MA182), Jul 13, 2004: Bell 407 (N503MT), Newberry, SC, destroyed, 4 fatal. Probable cause: The pilot's failure to maintain terrain clearance as a result of fog conditions. A contributing factor was inadequate weather and dispatch information relayed to the pilot. - [NTSB FTW04LA117](https://openairdocs.org/ntsb/FTW04LA117), Apr 27, 2004: Bell 407 (N407BP), Hurst, TX, substantial damage. Probable cause: The student pilot's excessive flare prior to touchdown during the practice autorotation which resulted in the tailboom stinger striking the ground. A contributing factor was the flight instructor's… - [NTSB NYC04CA049](https://openairdocs.org/ntsb/NYC04CA049), Dec 21, 2003: Bell B407 (N508MT), Morehead, KY, substantial damage. Probable cause: The ground personnel's failure to identify the hazardous condition. Factors were blowing snow and night conditions. - [NTSB FTW04IA023](https://openairdocs.org/ntsb/FTW04IA023), Nov 16, 2003: Bell 407 (N405PH), Eugene Is. 27, incident, minor damage. Probable cause: The loss of engine power due to the failure of the 3rd stage turbine wheel and subsequent catastrophic failure of the turbine assembly. - [NTSB FTW03TA156](https://openairdocs.org/ntsb/FTW03TA156), May 19, 2003: Bell 407 (N991SP), Franklin, LA, substantial damage. Probable cause: The loss of tail rotor effectiveness due to the inadequate maintenance performed by other company personnel. - [NTSB FTW03FA117](https://openairdocs.org/ntsb/FTW03FA117), Mar 24, 2003: Bell 407 (N501PH), Houma, LA, substantial damage. Probable cause: The loss of tail rotor drive and anti-torque control resulting from the fracture and separation of the #5 tail rotor drive segment due to the overtemperature and subsequent failure of the #5 hangar… - [NTSB FTW03FA097](https://openairdocs.org/ntsb/FTW03FA097), Feb 16, 2003: Bell 407 (N407HH), Mi 700, destroyed, 2 fatal. Probable cause: The catastrophic failure of the engine resulting from 1st stage turbine wheel blade failure due to type 1 hot corrosion (sulfidation). Contributing factors were the pilot's failure to brief the… - [NTSB LAX03GA001](https://openairdocs.org/ntsb/LAX03GA001), Oct 4, 2002: McDonnell Douglas 600N (N625SB), Rialto, CA, substantial damage. Probable cause: an engine deceleration event due to a loose HMU fuel line fitting, which was a result of inadequate maintenance procedures in the 100/300-hour inspection. Also causal was the flying pilot's and… All 60: https://openairdocs.org/engine/allison-250-c47-series/ntsb.md ## FAA accident and incident reports (85, 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 20251215019049A](https://openairdocs.org/incident/20251215019049A), Dec 15, 2025: Bell 407 (N404LL), Las Vegas, NV, Substantial damage. Pilot conducted preflight on ramp at Las Vegas airport. During the preflight, the pilot found a dent on one tail rotor blade and on the vertical fin. Pilot… - [Incident 20241216019039I](https://openairdocs.org/incident/20241216019039I), Dec 16, 2024: Mcdonnell Douglas Helicopter 600N (N812LH), Richardson, TX, Minor damage. The pilot departed the company hangar facility located at the mesquite, TX airport. While enroute to the planned 133 work location west of denton, TX. At low… - [Incident 20240827014029I](https://openairdocs.org/incident/20240827014029I), Aug 27, 2024: Mcdonnell Douglas Helicopter 600N (N812LH), Missoula, MT, Minor damage. Description of the deviation: 0830 Am, normal start to the day. Foreman laid out plan to pilot before take-off, which was to pick up and move 2 linemen off of… - [Accident 20240802014069A](https://openairdocs.org/incident/20240802014069A), Aug 2, 2024: Bell 407 (N20BH), Burley, ID, Substantial damage. At approximately 55 minutes and 110 miles after departure from elko and 38 minutes and 77 miles out from pocatello, the barrier inlet air filter light started… - [Accident 20240715008799A](https://openairdocs.org/incident/20240715008799A), Jul 15, 2024: Mcdonnell Douglas Helicopter 600N (N609RP), Eagle Lake, TX, Substantial damage. While conducting aerial gunnery operations the aircraft involved in the accident suffered engine power loss resulting in a crash which injured all 6 people on… - [Accident 20240711007499A](https://openairdocs.org/incident/20240711007499A), Jul 11, 2024: Bell 407 (N21BH), Stanley, ID, Substantial damage. Bell 407 helicopter was on a firefighting operation when it was attempting to refill the attached bucket with water from bench lake. The wind shifted/sheared… - [Incident 20230601005689I](https://openairdocs.org/incident/20230601005689I), Jun 1, 2023: Bell 407 (N20BH), Munising, MI, No damage. On 06/01/2023 at approximately 1825 EDT, a Bell 407 was performing firefighting operations when the aircraft experienced abnormal vibrations. The mechanical… - [Incident 20230101000019I](https://openairdocs.org/incident/20230101000019I), Jan 1, 2023: Bell 407 (N267SF), Ward, AR, Minor damage. Ward Arkansas: [privacy data omitted] Bell-407 helicopter s/n 53102. After completing patient drop-off in little rock, helicopter was transitioning back to… - [Accident 20221026011179A](https://openairdocs.org/incident/20221026011179A), Oct 26, 2022: Bell 407 (N34BM), Gulf Of Mexico, LA, Substantial damage, 1 fatal. Aircraft departed ship shoal 349(SS349) a manned offshore oil platform at 1631HRS for abbeville airport(iya) with an ETA of 1755HRS. At 1720 company flight… - [Accident 20220904018929A](https://openairdocs.org/incident/20220904018929A), Sep 4, 2022: Bell 407 (N687AM), Upland, CA, Substantial damage. At approximately 0800L,[privacy data omitted] single turbo-shaft engine helicopter departed hesperia (L26) to cow canyon saddle lz for a lift mission. The… - [Incident 20220623005149I](https://openairdocs.org/incident/20220623005149I), Jun 23, 2022: Bell 407 (N404PH), Seguin, TX, Minor damage. Aircraft took off and came to a hover. During hover the aircraft drifted back and struck a light pole with the main rotor blades. Aircraft landed with no other… - [Accident 20220608008059A](https://openairdocs.org/incident/20220608008059A), Jun 8, 2022: Bell 407 (N402SH), Ocean View, HI, Substantial damage. Aircraft departed on a part 135 air tour flight from kona airport at approximately 1700L. At approximately 1730 aircraft crashed in lava field near south point… - [Accident 20220114001679A](https://openairdocs.org/incident/20220114001679A), Jan 14, 2022: Bell 407 (N167RL), Houma, LA, Destroyed, 2 fatal. On January 14, 2022, at approximately 7:54 am local time, a Bell 407 helicopter, with n registration N167RL departed patterson, LA (ptn) operating under part… - [Incident 20211110020829I](https://openairdocs.org/incident/20211110020829I), Nov 10, 2021: Bell 407 (N619DE), Eloy, AZ, Minor damage. Helicopter was in cruise flight on an estimated heading of 325° and at 2000?MSL (about 450?AGL) indicating 125 KTS of airspeed when it experienced an… - [Accident 20210122000119A](https://openairdocs.org/incident/20210122000119A), Jan 22, 2021: Mcdonnell Douglas Helicopter 600N (N60BK), Lake Crystal, MN, Substantial damage. 01-22-2021 N60BK, MD600N. Pilot (PIC) obtained aviation weather from foreflight before departing mankato MN (kmkt) airport in the morning enroute to the field… - [Incident 20201104015589I](https://openairdocs.org/incident/20201104015589I), Nov 4, 2020: Bell 407 (N3191), Searcy, AR, Minor damage. 11/04/2020 - While preforming auto rotations for a check ride, the aircraft hit the ground hard from ten feet. One main rotor blade glanced the top of the… - [Accident 20200721011279A](https://openairdocs.org/incident/20200721011279A), Jul 21, 2020: Mcdonnell Douglas Helicopter 600N (N208MP), Thompson Falls, MT, Substantial damage. The pilot had just finished an external load operation and was in the process of landing when the helicopter expieance a loss of power. When the pilot noticed… - [Accident 20200720011699A](https://openairdocs.org/incident/20200720011699A), Jul 20, 2020: Mcdonnell Douglas Helicopter 600N (N745BW), San Andreas, CA, Destroyed. Helicopter hovering over checking a transmission wire ? Pilot in left seat and lineman in right and rear airspeed 15 mph 250 feet above the ground. Fire… - [Accident 20200122004599A](https://openairdocs.org/incident/20200122004599A), Jan 22, 2020: Bell 407 (N947LH), Minot, ND, Substantial damage. Pilot was relocating aircraft from Minot airport to the hospital helipad to load medical equipment and staff for a air ambulance flight. On approach to the… - [Accident 20191225019869A](https://openairdocs.org/incident/20191225019869A), Dec 25, 2019: Bell 407 (N663SF), Headland, AL, Substantial damage, 1 fatal. On final approach for landing the pilot of a helicopter air ambulance became unresponsive as reported by the medical flight crew. The aircraft rolled to the… - [Accident 20191207021249A](https://openairdocs.org/incident/20191207021249A), Dec 7, 2019: Bell 407 (N79LP), Grand Isle, LA, Destroyed, 2 fatal. December 7, 2019. Helicopter made a 10 minute out call to offshore platform that was the destination. Helicopter never made it to the platform. Operator made… - [Incident 20191110018459I](https://openairdocs.org/incident/20191110018459I), Nov 10, 2019: Bell 407 (N496PH), Fourchon, LA, Minor damage. During approach to SS218B, pilot was late in arresting the apparent rate of closure prior to touchdown, resulting in a harder than normal touchdown. Pilot… - [Incident 20190707009389I](https://openairdocs.org/incident/20190707009389I), Jul 7, 2019: Bell Helicopter Textron Canada 407 (N390SF), Lawton, OK, No damage. On July 7, 2019 at 1548(l) at Lawton-Fort Sill Regional Airport, OK the pilot of N390SF asked to taxi from hangar 5 to runway 17 for departure. Tower cleared… - [Accident 20190310000529A](https://openairdocs.org/incident/20190310000529A), Mar 10, 2019: Bell 407 (N577AL), Galliano, LA, Destroyed, 2 fatal. Pilot dispatched out of Galliano, LA(gao) with passenger direct to venice, LA (LS08). After departure pilot climbed to 600FT then started slow decent to 200FT.… - [Accident 20180408000149A](https://openairdocs.org/incident/20180408000149A), Apr 8, 2018: Mcdonnell Douglas Helicopter 600N (N602BP), Smethport, PA, Destroyed, 2 fatal. On April 8, 2018, at approximately 6:03 pm EDT, a macdonald Douglas helicopter MD600N, N602BP, operated by high line helicopters, LLC, was destroyed when it… - [Incident 20171105018259I](https://openairdocs.org/incident/20171105018259I), Nov 5, 2017: Bell 407 (N522RL), Gulf Of Mexico, LA, Minor damage. Airman was enroute from galliano, LA airport (gao) to an oil rig (MP281) in the Gulf Of Mexico (appx 20 miles east of gao) when he encountered a flock of birds… - [Incident 20170616013339I](https://openairdocs.org/incident/20170616013339I), Jun 16, 2017: Mcdonnell Douglas Helicopter 600N (N602BP), Blacksburg, VA, Minor damage. A/c made a precautionary landing in field after the windshield shattered. - [Accident 20170227007449A](https://openairdocs.org/incident/20170227007449A), Feb 27, 2017: Bell 407 (N1371), Chauvin, LA, Destroyed, 1 fatal. Westwind helicopters reposition flight, from offshore to base in houma, LA (butler aviation.) Company chdo is houston FSDO. Aircraft reported overdue via… - [Accident 20160929016039A](https://openairdocs.org/incident/20160929016039A), Sep 29, 2016: Bell 407 (N361SF), Lawton, OK, Substantial damage. Emergency services (EMS) rotorcraft N361SF, Bell 407, was on the approach segment inbound to comanche county community Hospital?s rooftop heliport (180K) and… - [Accident 20160215001699A](https://openairdocs.org/incident/20160215001699A), Feb 15, 2016: Mcdonnell Douglas Helicopter 600N (N745BW), Ashland, OR, No damage. The pilot noticed an abnormal vibration in the aircraft. On landing an examination of the main rotor blade revealed a 4.5 inch crack measured from the trailing… - [Accident 20151210023319A](https://openairdocs.org/incident/20151210023319A), Dec 10, 2015: Bell 407 (N408FC), Mcfarland, CA, Destroyed, 4 fatal. On December 10, 2015, at 1908 PDT, N408FC, an EMS Bell 407 helicopter, was involved in a fatal accident when the helicopter impacted with terrain in the… - [Accident 20151207019609A](https://openairdocs.org/incident/20151207019609A), Dec 7, 2015: Mcdonnell Douglas Helicopter 600N (N607BP), Richwood, TX, Substantial damage. The pilots stated that the aircraft had just transitioned from forward flight into a 50 foot hover. The aircraft rapidly pitched nose down. The pilot corrected… - [Accident 20151102019619A](https://openairdocs.org/incident/20151102019619A), Nov 2, 2015: Bell 407 (N496AE), San Antonio, TX, No damage. On November 2, 2015 a Bell helicopter (operating under 14 CFR part 135 helicopter emergency medical services (hems), started lifting to a 3 to 4 feet hover,… - [Incident 20150814013319I](https://openairdocs.org/incident/20150814013319I), Aug 14, 2015: Bell 407 (N485AE), San Antonio, TX, Minor damage. Aircraft was parked on an FBO ramp for refueling. Following refuel, pilot brought the aircraft to a hover between two other parked aircraft. The pilot… - [Accident 20150608009789A](https://openairdocs.org/incident/20150608009789A), Jun 8, 2015: Bell 407 (N501PH), Pecan Island, LA, Substantial damage. The aircraft was about 2 miles off shore in-bound at 1200'. Pilot and passengers heard "thud" & felt short duration vibration. Pilot lowered collective… - [Accident 20150305002659A](https://openairdocs.org/incident/20150305002659A), Mar 5, 2015: Bell 407 (N41BH), Justin, TX, Substantial damage. On March 5, 2015, at 1530 CST, a Bell helicopter, N41BH, owned by Bell helicopter Textron, inc., 3255 Bell helicopter blvd., fort worth, TX 76118, had an… - [Incident 20150129002559I](https://openairdocs.org/incident/20150129002559I), Jan 29, 2015: Bell 407 (N495AE), Clinton, OK, No damage. On January 30, 2015 air evac EMS inc. N495AE lost transmission oil pressure while in flight. N495AE flew for approximately 6 minutes before landing at Clinton… - [Incident 20150117000859I](https://openairdocs.org/incident/20150117000859I), Jan 17, 2015: Bell 407 (N407CR), Greenville, SC, Minor damage. The pilot reported during the flight that he and the crew had just been called back to their heliport/base to refuel after an air ambulance standby request had… - [Incident 20141101019859I](https://openairdocs.org/incident/20141101019859I), Nov 1, 2014: Bell 407 (N710DP), Denver, CO, Minor damage. On 11/01/14 Denver police department Bell helicopter N710DP departed from apa airport at approximately 1915. At approximately 1930 the helicopter encountered a… - [Accident 20140503006339A](https://openairdocs.org/incident/20140503006339A), May 3, 2014: Bell 407 (N407MH), Telluride, CO, Substantial damage. When maneuvering a right hand turn, the pilot heard a change in engine noise and felt a slight vibration. He then saw an engine chip light, followed by a fadec… - [Accident 20140427008539A](https://openairdocs.org/incident/20140427008539A), Apr 27, 2014: Mcdonnell Douglas Helicopter 600N (N606BP), Adelanto, CA, Destroyed. The helicopter exhibited the signs of loss of anti-torque control. - [Incident 20131020019419I](https://openairdocs.org/incident/20131020019419I), Oct 20, 2013: Bell 407 (N495AE), Cooperton, OK, Minor damage. Pilot stated he was cruise flight when he hit a bird. The bird entered the cabin through the left wind sheild. Pilot made a safe landing near the town of… - [Accident 20130813022319A](https://openairdocs.org/incident/20130813022319A), Aug 13, 2013: Bell 407 (N53LP), Patterson, LA, Destroyed. Aircraft was brought to a 10 foot hover on the oil rig platform. Pilot picked his direction for departure. Aircraft started forward, nose attitude down. As the… - [Incident 20130418005109I](https://openairdocs.org/incident/20130418005109I), Apr 18, 2013: Bell 407 (N495AE), Waco, TX, Minor damage. According to the pilot, this lifeguard flight originated from west, Texas following a fertilizer plant explosion with multiple deaths and injuries. The pilot… - [Incident 20130415006179I](https://openairdocs.org/incident/20130415006179I), Apr 15, 2013: Bell 407 (N408GA), Deer Valley, AZ, No damage. 4/15/2013 The pilot states that Bell 407, N408 ga, an air methods air ambulance flight, departed tuba city AZ hospital at 2047L en-route to banner good… - [Incident 20130319006729I](https://openairdocs.org/incident/20130319006729I), Mar 19, 2013: Bell 407 (N408RL), Gulf Of Mexico, Minor damage. While approaching an offshore platform for landing, the lower portion of the aircraft's vertical stabilizer came in contact with a pipe sticking above the… - [Accident 20121005024789A](https://openairdocs.org/incident/20121005024789A), Oct 5, 2012: Bell 407 (N406AL), Intracoastal Ci, LA, Destroyed, 1 fatal. The aircraft, on a part 91 maintenance check flight, was observed departing runway 24, disappearing into fog and then a crash was heard shortly thereafter by… - [Accident 20120831019819A](https://openairdocs.org/incident/20120831019819A), Aug 31, 2012: Bell 407 (N11SP), Bath, NY, Destroyed. Aircraft was in cruise flight at approx 500 ft AGL when pilot reported the nose pitched up and rolled/yawed right. Pilot reacted by pushing cyclic forward. As… - [Accident 20120807018289A](https://openairdocs.org/incident/20120807018289A), Aug 7, 2012: Mcdonnell Douglas Helicopter 600N (N737TV), Delta Junction, AK, Destroyed, 1 fatal. Pilot landed to a pad constructed of logs with large spacing. The initial landing was too long on the pad and the pilot attempted to move rearward. The tundra… - [Accident 20120414010679A](https://openairdocs.org/incident/20120414010679A), Apr 14, 2012: Bell 407 (N509MT), Aberdeen, SD, Substantial damage. Accident occurred on 4-14-2012, about 0200 CDT (0700Z) near Aberdeen, SD. Pilot had just refueled at the Aberdeen (abr) airport and was ferrying the aircraft… All 85: https://openairdocs.org/engine/allison-250-c47-series/incidents.md ## STCs that may be installed (OpenAirDocs) (1) Approved for this engine 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 SE578GL](https://openairdocs.org/stc/SE578GL): Installation of a fuel flow transducer. Shadin Avionics. Lists 250-C47B --- 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.