# TCDS H1CE: The Enstrom Helicopter Corporation - Type: Type certificate data sheet - Status: Current - Holder: The Enstrom Helicopter Corporation - Revision: 44 - Revised: September 29, 2025 - Product: Aircraft, Rotorcraft - Certification basis: Part 27, CAR 6 - Registered aircraft: 348, by the registry models matched to it (OpenAirDocs) - Data sheet PDF: https://openairdocs.org/files/sha256/30/99/3099519ecc342be0f6ef907b415da3a172eced1bcfca833358a116829b5b759f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113343219320251124162242.0001 - Page: https://openairdocs.org/tcds/H1CE ## Models (14) As the data sheet lists them. - TH-28 - 280C - 280 - F-28F - F-28F-R - 480 - F-28C-2R - F-28 - 280FX - F-28C-2 - F-28C - 280F - 480B - F-28A ## ADs (44, in force first) - [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 2001-25-02](https://openairdocs.org/ad/2001-25-02): Hub Plates · Enstrom Helicopter Corporation, The 480, 480B and TH-28. Effective Jan 15, 2002 - [AD 97-20-04](https://openairdocs.org/ad/97-20-04): Voltage Regulator and Over-Voltage Relay · Enstrom Helicopter Corporation, The 280, 280C, F-28A and 1 more. Effective Oct 7, 1997 - [AD 96-06-02](https://openairdocs.org/ad/96-06-02): Swashplate Bearings · Enstrom Helicopter Corporation, The 280, 280C, F-28A and 2 more. Effective Apr 25, 1996 - [AD 96-06-03](https://openairdocs.org/ad/96-06-03): Main Rotor Transmission Clutch Assembly · Enstrom Helicopter Corporation, The 280, 280C, 280F and 6 more. Effective Apr 23, 1996 - [AD 94-17-15](https://openairdocs.org/ad/94-17-15): Main Rotor Feathering Bearing · Enstrom Helicopter Corporation, The 280, 280C, 280F and 5 more. Effective Sep 15, 1994 - [AD 93-24-13](https://openairdocs.org/ad/93-24-13): Trim System · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 3 more. Effective Aug 26, 1994 - [AD 94-13-03](https://openairdocs.org/ad/94-13-03): Tail Rotor Spindle Inspection · Enstrom Helicopter Corporation, The 280C, 280F, 280FX and 3 more. Effective Aug 12, 1994 - [AD 93-15-10](https://openairdocs.org/ad/93-15-10): Composite-Wrapped Main Rotor Shaft · Enstrom Helicopter Corporation, The 280, 280C, 280F and 5 more. Effective Jan 28, 1994 - [AD 90-17-02](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 90-17-03](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 90-01-06](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 79-10-06 R1](https://openairdocs.org/ad/79-10-06-R1): Tail Rotor Blade Grips · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Mar 19, 1982 - [AD 81-17-01](https://openairdocs.org/ad/81-17-01): Starting Vibrator Assemblies · Bendix Starting Vibrator Assemblies, B-2, B-2A and 49 more. Effective Aug 13, 1981 - [AD 79-07-02](https://openairdocs.org/ad/79-07-02): Batteries · Aircraft Parts & Development A, A-2, A-3 and 149 more. Effective Apr 3, 1979 - [AD 79-02-01](https://openairdocs.org/ad/79-02-01): Turbochargers · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Jan 17, 1979 - [AD 77-25-05](https://openairdocs.org/ad/77-25-05): Idle Mixture · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Dec 21, 1977 - [AD 77-20-02](https://openairdocs.org/ad/77-20-02): Tail Rotor Spindle · Enstrom Helicopter Corporation, The 280, 280C, F-28 and 2 more. Effective Oct 6, 1977 - [AD 77-15-04](https://openairdocs.org/ad/77-15-04): Tail Rotor Pitch Link Assembly · Enstrom Helicopter Corporation, The 280C and F-28C. Effective Jul 26, 1977 - [AD 77-06-04](https://openairdocs.org/ad/77-06-04): Tail Rotor Assembly · Enstrom Helicopter Corporation, The 280C, F-28C, 280C and 1 more. Effective Mar 31, 1977 - [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 - [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 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 - [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 - [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 2015-04-51](https://openairdocs.org/ad/2015-04-51) (historical): Main Rotor Head · Enstrom Helicopter Corporation, The 280, 280C, 280F and 8 more ## Registered aircraft by registry model (OpenAirDocs) - [Enstrom F-28F](https://openairdocs.org/model/enstrom-f-28f): 62 aircraft (registry code 3300412) - [Enstrom Helicopter 480B](https://openairdocs.org/model/enstrom-helicopter-480b): 59 aircraft (registry code 3300561) - [Enstrom 280FX](https://openairdocs.org/model/enstrom-280fx): 58 aircraft (registry codes 3300506, 330050A) - [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c): 48 aircraft (registry code 3300505) - [Enstrom F-28C](https://openairdocs.org/model/enstrom-f-28c): 46 aircraft (registry code 3300407) - [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a): 38 aircraft (registry code 3300406) - [Enstrom Helicopter 480](https://openairdocs.org/model/enstrom-helicopter-480): 14 aircraft (registry code 3300560) - [Enstrom Helicopter 280FX](https://openairdocs.org/model/enstrom-helicopter-280fx): 7 aircraft (registry code 3300551) - [Enstrom Helicopter 280F](https://openairdocs.org/model/enstrom-helicopter-280f): 6 aircraft (registry code 3300550) - [Enstrom 280](https://openairdocs.org/model/enstrom-280): 5 aircraft (registry code 3300502) - [Enstrom Helicopter F28F](https://openairdocs.org/model/enstrom-helicopter-f28f): 2 aircraft (registry code 3300413) - [Enstrom F-28](https://openairdocs.org/model/enstrom-f-28): 1 aircraft (registry code 3300404) - [Enstrom Helicopter F-28A](https://openairdocs.org/model/enstrom-helicopter-f-28a): 1 aircraft (registry code 3300401) - [Enstrom Helicopter TH-28](https://openairdocs.org/model/enstrom-helicopter-th-28): 1 aircraft (registry code 3300435) - [Enstrom F-28B](https://openairdocs.org/model/enstrom-f-28b): 0 aircraft (registry code 3300405) - [Enstrom T-28](https://openairdocs.org/model/enstrom-t-28): 0 aircraft (registry code 3300430) ## STCs approved under this data sheet (67, first 50) - [STC SR02813CH](https://openairdocs.org/stc/SR02813CH): Fabrication of Isolair Innovator II Model 3900-480 Spray System. Isolair Inc. - [STC SR03173CH](https://openairdocs.org/stc/SR03173CH): Installation of Isolair Innovator 11 Model 3900-280 Spray System. Isolair Inc. - [STC SR04637CH](https://openairdocs.org/stc/SR04637CH): Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel. Airwolf Aerospace LLC - [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 SH1461CE](https://openairdocs.org/stc/SH1461CE): Installation of a Nite Sign Model H47B-1 Electronic Aerial Billboard.. Sky Sign Inc - [STC SR02704SE](https://openairdocs.org/stc/SR02704SE): Installation and maintenance of the Sunspot 36 and 46 series lights. AeroLED's Holdings LLC - [STC SR01067DE](https://openairdocs.org/stc/SR01067DE): Installation of main battery replacement with Concorde Lead-Acid battery. Concorde Battery Corporation - [STC SR03346CH](https://openairdocs.org/stc/SR03346CH): Installation of provisions for external equipment. Certex Aviation 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 SR03208CH](https://openairdocs.org/stc/SR03208CH): Installation of Lifeport, Inc. MedDeck Litter Kit. Helicopter Specialties, Inc. - [STC SR09643RC](https://openairdocs.org/stc/SR09643RC): Installation of the L3 AN/AR-154 TACAN System and Sandel SN3500 EHSI System. Helicopter Specialties, Inc. - [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 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 SA593CH](https://openairdocs.org/stc/SA593CH): Install Champion SlickSTART magneto booster system.. Champion Aerospace LLC - [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 (5 OF 6](https://openairdocs.org/stc/SA00680SE%20(5%20OF%206): 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 SR00811NY](https://openairdocs.org/stc/SR00811NY): Installation of Technisonic Industries Limited TFM-138 series transceiver models.. Technisonic Industries Limited - [STC SR01834NY](https://openairdocs.org/stc/SR01834NY): Installation of Globalstar Satellite Telephone System.. Atlantic Avionics 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 All 67: https://openairdocs.org/tcds/H1CE/stcs.md --- 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.