# Enstrom Helicopter F28F

- Type: Aircraft model (FAA registry)
- Registry code: 3300413
- Manufacturer (registry): ENSTROM HELICOPTER CORP
- Model: F28F
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · Reciprocating
- Seats: 3
- Weight class: Up to 12,499 lb
- Certification: Type certificated
- Data sheet: [TCDS H1CE](https://openairdocs.org/tcds/H1CE) (OpenAirDocs)
- Holder: The Enstrom Helicopter Corporation
- Registered aircraft: 2
- Page: https://openairdocs.org/model/enstrom-helicopter-f28f

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 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 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

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) (3)

- [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
- [SAIB SW-09-30](https://openairdocs.org/saib/SW-09-30): Cracked Pylons. Issued May 27, 2009

## Registered aircraft (2)

- [N28SH](https://openairdocs.org/aircraft/N28SH): [Renaud Michael](https://openairdocs.org/faa-owner/RENAUD%20MICHAEL), [Vernon, VT](https://openairdocs.org/faa-place/VT/Vernon), built 2012, S/N 830
- [N656X](https://openairdocs.org/aircraft/N656X): [Mackechnie Martin J](https://openairdocs.org/faa-owner/MACKECHNIE%20MARTIN%20J), [Palm Harbor, FL](https://openairdocs.org/faa-place/FL/Palm%20Harbor), S/N 784

## NTSB investigations (1)

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 ERA19LA285](https://openairdocs.org/ntsb/ERA19LA285), Sep 28, 2019: Enstrom F28 (N380SH), Bloomsburg, PA, substantial damage. Probable cause: The pilot's failure to maintain proper forward airspeed and power during final approach, which resulted in a loss of tail rotor effectiveness and impact with terrain.

## FAA accident and incident reports (1)

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 20190928023759A](https://openairdocs.org/incident/20190928023759A), Sep 28, 2019: Enstrom Helicopter Corp F28F (N380SH), Bloomsburg, PA, Substantial damage. While performing air tour rides at the Bloomsburg pa fairgrounds, the helicopter begun to spin on approach to the helipad. The helicopter spun clockwise two…

## Service difficulty reports (38)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2017FA0000418](https://openairdocs.org/sdr/2017FA0000418), Oct 14, 2016: FUEL CELL. DETERIORATED. DURING PREFLIGHT, SMALL PARTICLES WERE FOUND WHILE CHECKING THE FUEL SUMPS. ON FURTHER INVESTIGATION, IT WAS DETERMINED THAT THE EC776 SLOSHING COMPOUND INSTALL
- [SDR 2009FA0000284](https://openairdocs.org/sdr/2009FA0000284), Mar 31, 2009: MOUNT. CRACKED. TROUBLESHOOTING A TRACKING DISCREPANCY, IT WAS FOUND THAT THE RT FWD MOUNT LOCATION OF THE PYLON HAD CRACKED AS WELL AS THE GUSSET. THE CRACK WAS NOT VISIBLE TH
- [SDR 2008FA0000654](https://openairdocs.org/sdr/2008FA0000654), Jul 23, 2008: CYLINDER HEAD. DAMAGED. DURING CYLINDER OVERHAUL A DAMAGE SEAT POCKET CUTTER USE USED. THIS RESULTED IN A VALVE SEAT POCKET THAT MEASURED WITHIN LIMITS BUT LACKED THE PROPER SURFACE CO
- [SDR EAHR200500002](https://openairdocs.org/sdr/EAHR200500002), Sep 30, 2005: ADAPTER. BROKEN. WELD BROKEN AT TURBO-CHARGER FLANGE.
- [SDR 2003FA0000351](https://openairdocs.org/sdr/2003FA0000351), Jan 4, 2002: LINE. BROKEN. THE TUBE FAILED ADJACENT TO FERRULE ON THE ENGINE DRIVEN FUEL PUMP FITTING. FAILURE WAS FOUND UPON REMOVAL OF THE PART FROM THE AIRCRAFT TO PERFORM OTHER MAINTE
- [SDR 20000524SH010](https://openairdocs.org/sdr/20000524SH010), Apr 28, 2000: CAPACITOR. FAILED. SUBJECT CAPACITOR WAS INSTALLED NEW IN AUGUST, 1999. MAGNETO WAS PART OF SPARE ENGINE NOT INSTALLED UNTIL THIS MONTHV. THE CAPACITOR HAD VERY FEW HOURS (13.3 HR
- [SDR 20000615SH012](https://openairdocs.org/sdr/20000615SH012), Apr 4, 2000: SERVO. LEAKING. ENGINE QUIT IN-FLIGHT. HELICOPTER AUTOROTATED TO GROUND. INSPECTION FOUND FUEL LEAKING INSIDE THE SERVO. SERVO TO REPAIR STATION FOR REPAIR. DEBRIS FOUND IN BAL
- [SDR 20000714SH022](https://openairdocs.org/sdr/20000714SH022), Jun 9, 1999: GUARD. CRACKED. TAIL ROTOR GUARD CRACKED DUE TO VIBRATION.
- [SDR 99ZZZX1720](https://openairdocs.org/sdr/99ZZZX1720), Mar 24, 1999: POINTS. FAILED. POINTS CLOSED AND MAGNETO QUIT DUE TO MELTED CAM FOLLOWER. LYCOMING FACTORY OVERHAULED ENGINE, TELEDYNE CONT FACTORY OVERHAULED MAG, AND SLICK OVERHAULED HARNES
- [SDR 99ZZZX1719](https://openairdocs.org/sdr/99ZZZX1719), Mar 24, 1999: CAPACITOR. FAILED. POINTS CLOSED AND MAGNETO QUIT DUE TO MELTED CAM FOLLOWER. LYCOMING FACTORY OVERHAULED ENGINE, TELEDYNE CONT FACTORY OVERHAULED MAG, AND SLICK OVERHAULED HARNES
- [SDR 99ZZZX856](https://openairdocs.org/sdr/99ZZZX856), Jan 28, 1999: GEARBOX. MAKING METAL. 2.5 HOURS AFTER OIL CHANGE, M/R GEARBOX HAD CHIP LIGHT. LARGE FLAKES, BLACK OIL, SMELLED BURNT. OIL LEVEL CORRECT. OIL SAMPLE TAKEN.
- [SDR 98ZZZX1349](https://openairdocs.org/sdr/98ZZZX1349), Mar 25, 1998: CONTROL CABLE. BINDING. THROTTLE CONTROL CABLE INTERNAL BINDING CAUSES PARTIAL TO FULL LOSS OF THROTTLE CONTROL. UNIT IN SERVICE 7 WEEKS.
- [SDR 98ZZZX1350](https://openairdocs.org/sdr/98ZZZX1350), Mar 9, 1998: CONTROL CABLE. BINDING. THROTTLE CONTROL CABLE INTERNAL BINDING CAUSES PARTIAL TO FULL LOSS OF THROTTLE CONTROL. UNIT IN SERVICE 36 WEEKS.
- [SDR 98ZZZX1348](https://openairdocs.org/sdr/98ZZZX1348), Mar 6, 1998: CONTROL CABLE. BINDING. THROTTLE CONTROL CABLE INTERNAL BINDING CAUSES PARTIAL TO FULL LOSS OF THROTTLE CONTROL. UNIT IN SERVICE 20 WEEKS.
- [SDR 97ZZZX4492](https://openairdocs.org/sdr/97ZZZX4492), Oct 2, 1997: TRANSMISSION. MAKING METAL. TRANSMISSION GENERATING CHIP LIGHTS SINCE NEW ON AVERAGE OF 7-10 HOURS OF OPERATION. MFG SUGGESTED LESS SENSITIVE CHIP PLUG. XMSN CONTINUED TO GENERATE METAL. A
- [SDR 98ZZZX1351](https://openairdocs.org/sdr/98ZZZX1351), Jul 8, 1997: CONTROL CABLE. BINDING. THROTTLE CONTROL CABLE INTERNAL BINDING CAUSES PARTIAL TO FULL LOSS OF THROTTLE CONTROL. UNIT IN SERVICE 12 WEEKS.
- [SDR 97ZZZX3759](https://openairdocs.org/sdr/97ZZZX3759), Jun 25, 1997: AMPLIFIER. FAILED. DURING CLIMB-OUT AT 200 FEET AND 60 MPH, THE ENGINE LOST POWER DUE TO THE NR 2 CYLINDER INTAKE VALVE ROCKER ARM SHAFT FALLING OUT OF THE CYLINDER HEAD. THE LOW 
- [SDR 97ZZZX3758](https://openairdocs.org/sdr/97ZZZX3758), Jun 25, 1997: SEAT. DEFORMED. THIN COMPOSIT BENCH SEAT ACROSS 15.50 INCH WIDE ALUMINUM SEAT STRUCTURE. NOT ADEQUATE FOR TWO PASSENGERS. LOSS OF ENGINE POWER WHEN A VALVE ROCKER ARM SHAFT FEL
- [SDR 97ZZZX3551](https://openairdocs.org/sdr/97ZZZX3551), Jun 25, 1997: ROCKER SHAFT. FAILED. LOOSE RETAINING NUTS WORKED OFF STUDS ALLOWING THE PORT COVER TO FALL OFF AND NR 2 CYLINDER INTAKE VALVE ROCKER ARM SHAFT TO FALL OUT OF THE ENGINE RESULTING IN
- [SDR 97ZZZX2773](https://openairdocs.org/sdr/97ZZZX2773), May 19, 1997: ROD END BEARING. WORN. ACCELERATED LATERAL BEARING WEAR. EXCEEDED LIMITS WITHIN 304 HOURS. THIS ROD END NORMALLY LASTS UP TO 1,000 HOURS IN SERVICE. INSTALLED 2 NEW 01-691-04 BEARINGS
- [SDR 97ZZZX2554](https://openairdocs.org/sdr/97ZZZX2554), May 19, 1997: ROD END BEARING. WORN. ACCELERATED LATERAL BEARING WEAR. EXCEEDED LIMITS WITHIN 304 HOURS. THIS ROD END NORMALLY LASTS UP TO 1,000 HRS IN SERVICE. INSTALLED 2 NEW 01-691-04 BEARINGS.
- [SDR 97ZZZX2769](https://openairdocs.org/sdr/97ZZZX2769), May 18, 1997: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTROL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 97ZZZX2771](https://openairdocs.org/sdr/97ZZZX2771), May 14, 1997: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTROL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 97ZZZX2557](https://openairdocs.org/sdr/97ZZZX2557), May 14, 1997: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTORL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 97ZZZX2556](https://openairdocs.org/sdr/97ZZZX2556), May 13, 1997: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTORL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 96ZZZX5175](https://openairdocs.org/sdr/96ZZZX5175), Sep 11, 1996: RELAY. STUCK CONTACTS. POINTS IN RELAY FUSE TOGETHER CAUSING RUNAWAY TRIM ACTION RESULTING IN UNCONTROLLED ATTITUDES OF ACFT. REQUIRES TWO PILOTS ON CYCLIC TO OVERRIDE AND LAND ACFT. 
- [SDR 96ZZZX4104](https://openairdocs.org/sdr/96ZZZX4104), Jul 8, 1996: ROCKER COVER. GROOVED. ENGINE DISASSEMBLED DUE TO ROTOR BLADE STRIKE. FOUND SEVERAL DEEP RINGS WORN IN ROCKER COVERS WHERE ROCKER SHAFTS RIDE. (NOT CAUSED BY ACCIDENT.) SUBMITTER STAT
- [SDR 96ZZZX5540](https://openairdocs.org/sdr/96ZZZX5540), Jun 7, 1996: YOKE. CRACKED. CRACKS FOUND BETWEEN CONTROL ROD AND UNIVERSAL YOKES. CRACK RUNS DOWN THE WEB BETWEEN BOTH AT 2 LOCATIONS. SUBMITTER STATED THIS IS SECOND FOUND THIS MONTH. THE
- [SDR 96ZZZX4185](https://openairdocs.org/sdr/96ZZZX4185), Jun 7, 1996: SWASHPLATE YOKE. CRACKED. CRACKS FOUND BETWEEN CONTROL ROD AND UNIVERSAL YOKES. CRACK RUNS DOWN THE WEB BETWEEN BOTH AT 2 LOCATIONS. THIS IS SECOND FOUND THIS MONTH. THE OTHER CRACKED SW
- [SDR 96ZZZX5176](https://openairdocs.org/sdr/96ZZZX5176), May 21, 1996: RELAY. STUCK CONTACTS. POINTS IN RELAY FUSE TOGETHER CAUSING RUNAWAY TRIM ACTION RESULTING IN UNCONTROLLED ATTITUDES OF AIRCRAFT. REQUIRES BOTH PILOTS ON CYCLIC TO OVERRIDE. RELAY MFG
- [SDR 96ZZZX2936](https://openairdocs.org/sdr/96ZZZX2936), May 21, 1996: RELAY. FAILED. POINTS IN RELAY FUSE TOGETHER CAUSING RUNAWAY TRIM ACTION RESULTING IN UNCONTROLLED ATTITUDES OF AIRCRAFT. REQUIRES BOTH PILOTS ON CYCLIC TO OVERRIDE. RELAY MFG
- [SDR 97ZZZX2770](https://openairdocs.org/sdr/97ZZZX2770), May 6, 1996: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTROL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 97ZZZX2555](https://openairdocs.org/sdr/97ZZZX2555), May 6, 1996: UNIVERSAL HSNG. CRACKED. MOUNTING WEBS FOR CONTROL ROD BEARINGS AND UNIVERSAL JOINT OF LOWER SWASHPLATE FOUND CRACKED AT INSPECTION. THIS IS A PRIMARY FLIGHT CONTROL PART. THIS PART HAS
- [SDR 96ZZZX2937](https://openairdocs.org/sdr/96ZZZX2937), May 2, 1996: TRANSMISSION. MAKING METAL. TRANSMISSION GENERATING CHIP LIGHTS EVERY FIVE MINUTES OF OPERATION. TOOTH OF RING GEAR HAD CHUNK MISSING 1.25 INCHES LONG BY .25 INCH DEEP. INSTALLED ZERO TIME
- [SDR 96ZZZX2796](https://openairdocs.org/sdr/96ZZZX2796), Apr 8, 1996: WASTEGATE. FAILED. BUTTERFLY IN WASTEGATE WARPED AND LOSE FROM CRACKED WELDS JAMMING THROTTLE. BUTTERFLY SHAFT WORN AT PIVOT POINTS ALSO CAUSING THROTTLE BINDING. SUBMITTER STATES
- [SDR 96ZZZX2789](https://openairdocs.org/sdr/96ZZZX2789), Apr 1, 1996: CONTROL CABLE. FRAYED. INFORMATION APPLICABLE TO MODELS, F28C, F28C-2 F28-F, 280F, 280FX. INSPECTION FOUND TAIL ROTOR CABLES FRAYED WHERE THEY PASS OVER THE AFT ALIGNMENT PULLEYS IN T
- [SDR CA960227012](https://openairdocs.org/sdr/CA960227012), Feb 7, 1996: CLAMP. CRACKED. (CAN)CRACKED CLAMP ON FORWARD CROSSTUBE. AIRCRAFT USED AS A TRAINER.
- [SDR 96ZZZX615](https://openairdocs.org/sdr/96ZZZX615), Jan 24, 1996: WASTEGATE. WARPED. BUTTERFLY IN WASTEGATE FOUND WARPED AT EACH 100-HOUR INSPECTION. WARPED WASTEGATE AND WORN BUTTERFLY AND SHAFT CAUSE THROTTLE BINDING. BUTTERFLY MUST BE STRAIGH

## STCs that may be installed (OpenAirDocs) (41)

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 SR02120SE](https://openairdocs.org/stc/SR02120SE): Installation of Garmin GTN 6XX/7XX Navigation System. Garmin International Inc
- [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 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 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 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 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 SR00757AT](https://openairdocs.org/stc/SR00757AT): Installation of Inframetrics Model IRTV 445G thermal imager. Palmetto Helicopters, Inc
- [STC SR00382AT](https://openairdocs.org/stc/SR00382AT): Installation of FLIR 2000 series thermal imager. Palmetto Helicopters, Inc
- [STC SR00255AT](https://openairdocs.org/stc/SR00255AT): Installation of Spectrolab SX-5 searchlight. Palmetto Helicopters, 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 SH591GL](https://openairdocs.org/stc/SH591GL): Install structural provisions for cabinmounted electronic news gathering equipment (TV monitor/ receiver, audio/video switching, AM headset control box, UHF FM control head, associated switches and circuit breakers) not to exceed 30 lbs., baggage-box- mounted UHF/VHF transmitters/receivers not to exceed 20 lbs., and wiring harness. Airborne Microwave, Inc
- [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 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

## PMA parts (OpenAirDocs) (103, first 50)

Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this model on its data sheet, so check the FAA record before relying on it. Newest first.

- [MDL TD 031851](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188062838120250508133549.0001): VA-1A( )AndAccessories. Electronics International Inc · PMA PQ0088NM · Modification part · Apr 10, 2025
- [01-0790906-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136486675220220610124334.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 2022
- [600700-0000](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID388381186520220308142525.0001): Turbocharger Assy. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Rajay Model 301E10-2, P/N RJ0328 … · Dec 16, 2021
- [ALE-2008AE-AC](https://drs.faa.gov/browse/excelExternalWindow/E2B30B020A91DE91862585DE00509F79.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008AE, as used in alternators ALT… · Sep 1, 2020
- [ALE-2008AA-AC](https://drs.faa.gov/browse/excelExternalWindow/C617AAB83C6B799B862585DE0050A01D.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008AA, as used in alternators ALY… · Sep 1, 2020
- [XA-943FS-AC](https://drs.faa.gov/browse/excelExternalWindow/B7CC6ECA46AA2F14862585DE00509E71.0001): Pos. Diode. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces XA-943FS, as used in alternators ALE… · Sep 1, 2020
- [ALE-1013AS-AC](https://drs.faa.gov/browse/excelExternalWindow/9F424D3467678943862585DE00509EFC.0001): Alternator Brush. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-1013AS, as used in alternators ALE… · Sep 1, 2020
- [ALU-3045BS-AC](https://drs.faa.gov/browse/excelExternalWindow/68353ACEF594EACF862585DE0050A127.0001): Brush Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALU-3045BS, as used in alternators ALE… · Sep 1, 2020
- [ALE-2008ABS-AC](https://drs.faa.gov/browse/excelExternalWindow/6583E821C11FC24F862585DE0050A086.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008ABS, as used in alternators… · Sep 1, 2020
- [XA-944JS-AC](https://drs.faa.gov/browse/excelExternalWindow/0388185039CFC4DD862585DE00509DDD.0001): Neg. Diode. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces XA-944JS, as used in alternators ALE… · Sep 1, 2020
- [ALE-2008ABS-AC](https://drs.faa.gov/browse/excelExternalWindow/D6FF39FD09272684862585A80035E2C3.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008ABS as used in Kelly… · Jul 14, 2020
- [ALU-3045BS-AC](https://drs.faa.gov/browse/excelExternalWindow/BDCE1BF615C7C07F862585A80035E30E.0001): Brush Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALU-3045BS as used in Kelly Aerospace… · Jul 14, 2020
- [XA-944JS-AC](https://drs.faa.gov/browse/excelExternalWindow/7D10ABF30982F851862585A80035E125.0001): Neg. Diode. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces XA-944JS as used in Kelly Aerospace… · Jul 14, 2020
- [ALE-2008AE-AC](https://drs.faa.gov/browse/excelExternalWindow/653EDB41D36E637B862585A80035E22A.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008AE as used in Kelly Aerospace… · Jul 14, 2020
- [ALE-1013AS-AC](https://drs.faa.gov/browse/excelExternalWindow/5023594FC72E2A5F862585A80035E1DF.0001): Alternator Brush. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-1013AS as used in Kelly Aerospace… · Jul 14, 2020
- [ALE-2008AA-AC](https://drs.faa.gov/browse/excelExternalWindow/4077186575E9032A862585A80035E272.0001): Stator. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces ALE-2008AA as used in Kelly Aerospace… · Jul 14, 2020
- [XA-943FS-AC](https://drs.faa.gov/browse/excelExternalWindow/2B2BE444A62E7876862585A80035E196.0001): Pos. Diode. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces XA-943FS as used in Kelly Aerospace… · Jul 14, 2020
- [AA-ECD-084-280](https://drs.faa.gov/browse/excelExternalWindow/66AC7A188E91A107862585D20047E1E4.0001): Tension-Torsion Strap Assy. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Modification part · Apr 16, 2020
- [P/N AFC-K014](https://drs.faa.gov/browse/excelExternalWindow/EFBC446405E5127286258567003E46D1.0001): Airwolf Remote Oil Filter Kit. Airwolf Filter Corp. · PMA PQ3870SW · Modification part · Oct 8, 2019
- [96394-01](https://drs.faa.gov/browse/excelExternalWindow/D61885C356FABE7286258439006DEF02.0001): ENGINE MOUNT. Hutchinson Aerospace & Industry Inc · PMA PQ0524NM · Replaces 96394-01 · Oct 1, 2018
- [87-05208-001](https://drs.faa.gov/browse/excelExternalWindow/C4B8A8A2B2422B728625822E007853B6.0001): Assembly, Light, PAR 46 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0790750-20 · Jan 23, 2018
- [A10019-E](https://drs.faa.gov/browse/excelExternalWindow/A43393C3FB19A1D08625818B00616FAA.0001): Pump-Motor Assembly. Weldon Pump · PMA PQ2411CE · Replaces Weldon Pump A10019-E, The Enstrom… · Aug 21, 2017
- [A10019-D](https://drs.faa.gov/browse/excelExternalWindow/181DC2E42593B7228625818B00616F1E.0001): Pump-Motor Assembly. Weldon Pump · PMA PQ2411CE · Replaces Weldon Pump A10019-D, The Enstrom… · Aug 21, 2017
- [87-05207-002](https://drs.faa.gov/browse/excelExternalWindow/4BE4BA39295AB01E862581760058C64D.0001): Assembly, Light, PAR 36 Taxi. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-25 · Aug 1, 2017
- [87-05207-001](https://drs.faa.gov/browse/excelExternalWindow/4ACD6BDF5990D9C7862581760058C571.0001): Assembly, Light, PAR 36 Landing. Astronics Luminescent Systems Inc · PMA PQ0786NE · Replaces 01-0771833-20 · Aug 1, 2017
- [10-357290-1](https://drs.faa.gov/browse/excelExternalWindow/60264AF302AFF2898625810200794B69.0001): Switch, Ignition. Continental Motors Inc · PMA PQ1269CE · Replaces 10-357290-1 · Feb 16, 2017
- [01-0790750-20](https://drs.faa.gov/browse/excelExternalWindow/DF585F07385239BF86257F000060B609.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [01-0771833-20](https://drs.faa.gov/browse/excelExternalWindow/B3ED2FAAA3DCF33C86257F000060B51A.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [01-0790750-10](https://drs.faa.gov/browse/excelExternalWindow/9D6AFCBD1348AD6186257F000060B5B8.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [01-0771833-15](https://drs.faa.gov/browse/excelExternalWindow/687551E9968AF90886257F000060B4C0.0001): LED Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [01-0771833-25](https://drs.faa.gov/browse/excelExternalWindow/368AB879B374E71086257F000060B56A.0001): LED Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [01-0771833-10](https://drs.faa.gov/browse/excelExternalWindow/0973C66BC006449A86257F000060B467.0001): LED Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Modification part · Oct 28, 2015
- [AA-28-14389-11](https://drs.faa.gov/browse/excelExternalWindow/F816FBBCD3798DDA862585D200488B0C.0001): Cover. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14389-11 · Oct 1, 2015
- [AA-28-14383-13](https://drs.faa.gov/browse/excelExternalWindow/F2E392CD52D3ACE386257ED7004D4E10.0001): Cylinder. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14383-13 · Oct 1, 2015
- [AA-28-14239-1](https://drs.faa.gov/browse/excelExternalWindow/CFA6312DCA0B8F99862585D200488799.0001): Cover. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14239-1 · Oct 1, 2015
- [AA-28-14382-19](https://drs.faa.gov/browse/excelExternalWindow/B419DC76E8741B4C86257ED7004D4E0E.0001): Pin. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14382-19 · Oct 1, 2015
- [AA-28-14387-13](https://drs.faa.gov/browse/excelExternalWindow/AE0938F98D95416E86257ED7004D4E12.0001): Spindle Adapter. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14387-13 · Oct 1, 2015
- [AA-28-14382-19](https://drs.faa.gov/browse/excelExternalWindow/A70FC46B6D2C7EAE862585D200488856.0001): Pin. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14382-19 · Oct 1, 2015
- [AA-28-14382-21](https://drs.faa.gov/browse/excelExternalWindow/881DE1EE8B6EE50986257ED7004D4E0F.0001): Pin. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14382-21 · Oct 1, 2015
- [AA-28-14384-13](https://drs.faa.gov/browse/excelExternalWindow/76A22EF3F41C022D862585D2004889E1.0001): Lug. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14384-13 · Oct 1, 2015
- [AA-28-14389-13](https://drs.faa.gov/browse/excelExternalWindow/74E9C2018FD511F886257ED7004D4E14.0001): Cover. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14389-13 · Oct 1, 2015
- [AA-28-14239-1](https://drs.faa.gov/browse/excelExternalWindow/646C20B4DB5DFB7386257ED7004D4E0B.0001): Cover. Airwolf Aerospace, LLC · PMA PQ2480CE · Replaces 28-14239-1 · Oct 1, 2015
- [AA-28-14382-21](https://drs.faa.gov/browse/excelExternalWindow/40BFAA605AEAB6EE862585D2004888E0.0001): Pin. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14382-21 · Oct 1, 2015
- [AA-28-14383-13](https://drs.faa.gov/browse/excelExternalWindow/4088AC9F7F363C0E862585D200488963.0001): Cylinder. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14383-13 · Oct 1, 2015
- [AA-28-14389-13](https://drs.faa.gov/browse/excelExternalWindow/2F4056D0E5AA5CD2862585D200488BA8.0001): Cover. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14389-13 · Oct 1, 2015
- [AA-28-14387-13](https://drs.faa.gov/browse/excelExternalWindow/13BDE31D9F1C0866862585D200488A68.0001): Spindle Adapter. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14387-13 · Oct 1, 2015
- [AA-28-14386-5](https://drs.faa.gov/browse/excelExternalWindow/FDF380CC1692466E862585D20047E323.0001): Grip Assembly. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14386-5 · Aug 23, 2015
- [AA-28-14385-15](https://drs.faa.gov/browse/excelExternalWindow/E4804D1F11CA0E70862585D20047E269.0001): Spindle. Airwolf Aerospace LLC (formerly Airwolf Helicopter) · PMA PQ2684CE · Replaces 28-14385-15, 28-14385-13 · Aug 23, 2015
- [A-0750161-25](https://drs.faa.gov/browse/excelExternalWindow/5083DFE4689D480B86257D47005879B2.0001): Exhaust Half Clamp. Aerospace Welding Minneapolis, Inc. · PMA PQ2712CE · Replaces Enstrom P/N 099005-401 EL-037360-401 · Aug 25, 2014
- [DEL099005-100](https://drs.faa.gov/browse/excelExternalWindow/FA3593FCB70AEC1D86257BA2005122BF.0001): Bead Clamp Seal. Dawley Manufacturing Corp · PMA PQ2563CE · Replaces 099005-401, EL-037360-401 · Jul 1, 2013

All of them: https://openairdocs.org/model/enstrom-helicopter-f28f/pma.md

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Enstrom F-28F](https://openairdocs.org/model/enstrom-f-28f): 62 registered aircraft, registry code 3300412

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