# Enstrom Helicopter F-28A

- Type: Aircraft model (FAA registry)
- Registry code: 3300401
- Manufacturer (registry): ENSTROM HELICOPTER CORP
- Model: F-28A
- 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: 1
- Page: https://openairdocs.org/model/enstrom-helicopter-f-28a

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 2023-11-07](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 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 93-15-10](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 83-04-04](https://openairdocs.org/ad/83-04-04): Main Rotor Gearboxes · Enstrom Helicopter Corporation, The 280 and F-28A. Effective Mar 1, 1983
- [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
- [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 75-22-01](https://openairdocs.org/ad/75-22-01): Main Rotor System · Enstrom Helicopter Corporation, The F-28A. Effective Jul 1, 1976
- [AD 76-05-11](https://openairdocs.org/ad/76-05-11): Tail Cone Attach Bolts · Enstrom Helicopter Corporation, The 280 and F-28A. Effective Mar 18, 1976
- [AD 75-22-10](https://openairdocs.org/ad/75-22-10): Hub Lock Washer · Enstrom Helicopter Corporation, The 280 and F-28A. Effective Oct 28, 1975
- [AD 74-12-01](https://openairdocs.org/ad/74-12-01): Forged Idler Yoke · Enstrom Helicopter Corporation, The F-28 and F-28A. Effective Sep 4, 1974
- [AD 74-17-07](https://openairdocs.org/ad/74-17-07): Main Rotor Gear Box · Enstrom Helicopter Corporation, The F-28A. Effective Aug 24, 1974
- [AD 72-11-04](https://openairdocs.org/ad/72-11-04): Failure Tail Rotor Drive Pins · Enstrom Helicopter Corporation, The F-28A. Effective Jun 1, 1972

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 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
- [AD 76-17-08 R1](https://openairdocs.org/ad/76-17-08-R1) (historical): Main Rotor Shaft · Enstrom Helicopter Corporation, The 280, F-28 and F-28A. Effective Oct 4, 1977
- [AD 76-17-08](https://openairdocs.org/ad/76-17-08) (historical): Main Rotor Shaft · Enstrom Helicopter Corporation, The 280, F-28 and F-28A. Effective Oct 4, 1977

## Information bulletins (advisory) (1)

- [SAIB SW-12-10R1](https://openairdocs.org/saib/SW-12-10R1): Fuel Level Indication. Issued Feb 3, 2012

## Registered aircraft (1)

- [N319EN](https://openairdocs.org/aircraft/N319EN): [Medic Choppers LLC](https://openairdocs.org/faa-owner/MEDIC%20CHOPPERS%20LLC), [Springdale, AR](https://openairdocs.org/faa-place/AR/Springdale), built 1975, S/N 319

## NTSB investigations

None matched to aircraft with this model.

## FAA accident and incident reports

None matched to aircraft with this model.

## Service difficulty reports (6)

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

- [SDR 2017FA0000655](https://openairdocs.org/sdr/2017FA0000655), Dec 20, 2017: INTAKE ROCKER. WORN. WHILE CONDUCTION FLIGHT OPERATIONS AND PERFORMING A RIGHT MANEUVER, ENGINE STARTED RUNNING ROUGH. UPON REACHING PATTERN ALTITUDE THE ENGINE COULD NOT MAINTAIN R
- [SDR CA141218005](https://openairdocs.org/sdr/CA141218005), Dec 5, 2014: ENGINE. POWER LOSS. (CAN) AFTER NORMAL APPROACH TO LAND, THE TORQUE DROPPED UN-COMMANDED FROM 3400LBS TO 2600LBS, THEN BACK UP AGAIN UN-COMMANDED. OTHER ENGINE PARAMETERS FOLLOWED.
- [SDR GWH2011F00000](https://openairdocs.org/sdr/GWH2011F00000), Nov 11, 2011: DRIVE BELT. FRAYED. BELT WAS FOUND TO BE FRAYED ABOUT .5" IN FROM THE AFT SIDE, THE ENTIRE LENGTH OF BELT. PILOT STATED BELT WAS IN GOOD CONDITION WHEN ACFT WAS PREFLIGHTED ABOUT A
- [SDR AU980809](https://openairdocs.org/sdr/AU980809), Jul 17, 1998: CYLINDER. CRACKED. (AUS) CYLINDER HEAD SEPARATED FROM BARREL AT THE SECOND THREAD FROM THE TOP.
- [SDR 98ZZZX1739](https://openairdocs.org/sdr/98ZZZX1739), Apr 18, 1998: COIL. FAILED. COMPLAINT WAS 'MISFIRE' AT CRUISE POWER. SYMPTOM WAS NOSE YAW AT ERRATIC INTERVALS. NORMAL PREFLIGHT RUN-UP CHECK SHOWED NO PROBLEM. MAGNETO CHECK AT HOVER POWE
- [SDR 95ZZZX1314](https://openairdocs.org/sdr/95ZZZX1314), Jan 30, 1995: DISTRIBUTOR GEAR. TEETH FAILED. TEN MINUTES INTO A TOUR FLIGHT, ENGINE BECAME MOMENTARILY ROUGH. UPON RETURNING TO THE HELIPAD, A MAG CHECK REVEALED THE RIGHT MAG WAS DEAD. UPON REMOVAL AND IN

## STCs that may be installed (OpenAirDocs) (40)

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 SR00063DE](https://openairdocs.org/stc/SR00063DE): Installation of Inframetrics IRTV-445G infrared imaging system. Dart Aerospace Company
- [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 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 SA01669CH](https://openairdocs.org/stc/SA01669CH): Installation of Challenger Reusable Air Filter. Challenger Aviation Products Inc
- [STC SR03353CH](https://openairdocs.org/stc/SR03353CH): Installation of Aspen Avionics Evolution Primary and Multi-Functional Flight Displays. AspenSTC Inc
- [STC SA00432SE](https://openairdocs.org/stc/SA00432SE): Installation of EGT 701 series fuel flow instrument. J P Instruments
- [STC SA00861SE](https://openairdocs.org/stc/SA00861SE): Installation of J.P. Instruments (JPI) fuel flow indicating system. J P Instruments
- [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 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 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 SH1074SO](https://openairdocs.org/stc/SH1074SO): Installation of an electric rotor engage system with engage and disengage indicators. Aircraft Equipment Certification Corporation
- [STC SA2386SW](https://openairdocs.org/stc/SA2386SW): Installation of S.A.F.E., EGT, CHT Systems. Avicon Development Corporation
- [STC SA02153LA-D](https://openairdocs.org/stc/SA02153LA-D) (historical): Installation of Garmin G600 Primary Flight Display (PFD) and Multifunction Display (MFD) System. Garmin International 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) (64, 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
- [8850-6CJ](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156769844120240625133920.0001): MOTOR (14 VDC). McFarlane Aviation Inc. · PMA PQ3732CE · Replaces 8850-6 · Mar 14, 2024
- [8850-6CJ](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID114190752320220720120315.0001): Motor (14 Vdc). C J Aviation, Inc. · PMA PQ1607CE · Replaces Weldon Pumps8850-6 · Jun 17, 2022
- [01-0790906-00](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136486675220220610124334.0001): LED Landing Light. Whelen Aerospace Technologies · PMA PQ1372CE · Modification part · Jun 6, 2022
- [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
- [A8110-C](https://drs.faa.gov/browse/excelExternalWindow/832313CF5ECB83578625818B00617003.0001): Pump-Motor Assembly. Weldon Pump · PMA PQ2411CE · Replaces Weldon Pump A8110-C, The Enstrom… · Aug 21, 2017
- [A8110-G](https://drs.faa.gov/browse/excelExternalWindow/0D78A94A765EF0428625818B00617057.0001): Pump-Motor Assembly. Weldon Pump · PMA PQ2411CE · Replaces Weldon Pump A8110-G, 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
- [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
- [DEL099005-100](https://drs.faa.gov/browse/excelExternalWindow/93920D0C8AE5372786257B500066C593.0001): Bead Clamp Seal. Dawley Manufacturing Corp · PMA PQ2563CE · Replaces 099005-401, EL-037360-401 · Apr 15, 2013
- [B-00368-17](https://drs.faa.gov/browse/excelExternalWindow/96D6DFA1B065569C86257AB60074821E.0001): Alternator Control, 28V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00368-11, ECD-069-13 · Oct 28, 2012
- [B-00371-1](https://drs.faa.gov/browse/excelExternalWindow/7754ADE94D77CA8C86257AB600748237.0001): Alternator Control, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00371-9 · Oct 28, 2012
- [B-00331-2](https://drs.faa.gov/browse/excelExternalWindow/70ED2A605A73B5C886257AB6007481FE.0001): Voltage Regulator, Type I, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00331-3 · Oct 28, 2012
- [B-00371-1](https://drs.faa.gov/browse/excelExternalWindow/4EA8471166B9C2AB86257AB600748240.0001): Alternator Control, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00371-12, ECD-069-11 · Oct 28, 2012
- [B-00289-2](https://drs.faa.gov/browse/excelExternalWindow/484DCE0AB623569686257AB6007481E2.0001): Relay, Over-Voltage, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00264-3, 28-19019-1 · Oct 28, 2012
- [01-0771424-25](https://drs.faa.gov/browse/excelExternalWindow/DFC8C9A036093F40862579EC00539710.0001): LED PAR36 Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-25 · Apr 10, 2012
- [01-0771424-20](https://drs.faa.gov/browse/excelExternalWindow/BD84CA0936FC287C862579EC0053969B.0001): LED PAR36 Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-20 · Apr 10, 2012
- [01-0771424-10](https://drs.faa.gov/browse/excelExternalWindow/3A8EEF8AE12997AF862579EC0053960D.0001): LED PAR36 Landing Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-10 · Apr 10, 2012
- [01-0771424-15](https://drs.faa.gov/browse/excelExternalWindow/2788755BBBD7B122862579EC00539658.0001): LED PAR36 Taxi Light. Whelen Engineering Co Inc · PMA PQ0610NE · Replaces 01-0771424-15 · Apr 10, 2012
- [CP-4423](https://drs.faa.gov/browse/excelExternalWindow/BF2B84DA5A7357F08625780E006F5D51.0001): Air Filter. Challenger Aviation Products Inc · PMA PQ2646CE · Replaces Fram CA151PL AC A53C Purolater AFP5 · Dec 20, 2010
- [B-00371-1](https://drs.faa.gov/browse/excelExternalWindow/F89DF07D7FF1D2F486257AB600732389.0001): Alternator Control, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00371-9 · Dec 14, 2010
- [B-00368-17](https://drs.faa.gov/browse/excelExternalWindow/DBD6CEC0C86D078986257AB60073236A.0001): Alternator Control, 28V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00368-11, ECD-069-13 · Dec 14, 2010
- [B-00371-1](https://drs.faa.gov/browse/excelExternalWindow/52E82885FC6759E986257AB600732393.0001): Alternator Control, 14V. Lamar Technologies LLC · PMA PQ2242NM · Replaces B-00371-12, ECD-069-11 · Dec 14, 2010

All of them: https://openairdocs.org/model/enstrom-helicopter-f-28a/pma.md

## The same model under other registry codes

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

- [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a): 38 registered aircraft, registry code 3300406

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