# N4874: 1968 Enstrom F-28A

- Status: Valid registration
- Airframe: [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a) (registry code 3300406, 3 seats)
- Engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE) (The Enstrom Helicopter Corporation), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (Lycoming Engines) (OpenAirDocs)
- Serial number: 025
- Year built: 1968
- Type: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: December 5, 1968
- Certificate issued: August 29, 2000
- Expires: June 30, 2028
- Mode S code: A6057E
- Registered owner: [Goin Jeff Trustee](https://openairdocs.org/faa-owner/GOIN%20JEFF%20TRUSTEE)
- Location: [Polk City, FL](https://openairdocs.org/faa-place/FL/Polk%20City)
- Owner type: Individual
- Owner's area on the map: 28.2676° N, 81.8538° W: Placed by OpenAirDocs at the center of ZIP code 33868, within about 8 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4874
- Page: https://openairdocs.org/aircraft/N4874

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Lycoming I0360 model are included.

## ADs that may apply (OpenAirDocs): 69 in force

### Matched by airframe (Enstrom F-28A)

- [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

### Matched by engine (Lycoming I0360 series)

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022
- [AD 2020-25-12](https://openairdocs.org/ad/2020-25-12): Reciprocating Engine Power Section · Superior Air Parts IO-360-A1A1, IO-360-A1A2, IO-360-A2A1 and 146 more. Effective Jan 15, 2021
- [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017
- [AD 2015-19-07](https://openairdocs.org/ad/2015-19-07): Fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 187 more. Effective Nov 3, 2015
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009
- [AD 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007
- [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006
- [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006
- [AD 2006-06-16](https://openairdocs.org/ad/2006-06-16): Crankshaft · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, IO-360-A1B6 and 18 more. Effective Apr 27, 2006
- [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003
- [AD 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 2002
- [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998
- [AD 98-02-08](https://openairdocs.org/ad/98-02-08): Crankshaft · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 216 more. Effective Mar 30, 1998
- [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 96-23-03](https://openairdocs.org/ad/96-23-03): High pressure fuel pumps · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 174 more. Effective Dec 23, 1996
- [AD 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996
- [AD 95-07-01](https://openairdocs.org/ad/95-07-01): Connecting Rod Bolt · Lycoming Engines AEIO-360-A1E, AEIO-360-B1G6, AEIO-360-H1A and 177 more. Effective Apr 12, 1995
- [AD 93-14-15](https://openairdocs.org/ad/93-14-15): Instrument Panel Placard, · Lycoming Engines IO-360-A1B6D and IO-360-A3B6D with STC SA4758NM or SE4757NM. Effective Aug 23, 1993
- [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992
- [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991
- [AD 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989
- [AD 79-04-05](https://openairdocs.org/ad/79-04-05): Regulator Diaphragm Stem Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 215 more. Effective Sep 26, 1979
- [AD 78-23-10](https://openairdocs.org/ad/78-23-10): Center Body Bellows Seal Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 218 more. Effective Nov 7, 1978
- [AD 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977
- [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977
- [AD 75-09-15](https://openairdocs.org/ad/75-09-15): Fuel Starvation To The Engine · Lycoming Engines AIO-320-A1A, AIO-320-A1B, AIO-320-A2A and 130 more. Effective Apr 30, 1975
- [AD 73-10-02](https://openairdocs.org/ad/73-10-02): Bendix Fuel Injectors · Bendix Fuel Injectors, AIO-320-A1A, AIO-320-A1B and 88 more. Effective May 16, 1973
- [AD 71-05-02](https://openairdocs.org/ad/71-05-02): Crankcase Main Bearings · Lycoming Engines IO-360-A1A, IO-360-A1B, IO-360-A1B6 and 9 more. Effective Feb 13, 1973
- [AD 71-11-02](https://openairdocs.org/ad/71-11-02): Intake and Exhaust Hydraulic Tappet Plunger Assembly · Lycoming Engines IO-360-A1A, IO-360-A1B, IO-360-A1B6 and 9 more. Effective Mar 14, 1972
- [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 67-22-06](https://openairdocs.org/ad/67-22-06): Fuel Injectors · Lycoming Engines HIO-360-A1A, HIO-360-B1A, HIO-360-B1B and 28 more. Effective Aug 9, 1967
- [AD 67-01-04](https://openairdocs.org/ad/67-01-04): Oil Filters · Full flow oil filter (Superior Flow STC SA401SW or 2 others). Effective Jan 2, 1967
- [AD 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966
- [AD 64-16-05](https://openairdocs.org/ad/64-16-05): AC Pumps · Lycoming Engines HIO-360-B1A, HIO-360-B1B, IO-320-B1A and 86 more. Effective Jul 10, 1964

### 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
- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024
- [AD 2011-26-04](https://openairdocs.org/ad/2011-26-04) (historical): Externally mounted fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 186 more. Effective Jan 25, 2012
- [AD 2011-15-10](https://openairdocs.org/ad/2011-15-10) (historical): Fuel servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 256 more. Effective Aug 16, 2011
- [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008
- [AD 2008-14-07](https://openairdocs.org/ad/2008-14-07) (historical): Externally mounted fuel injector fuel lines · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 185 more. Effective Aug 14, 2008
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14) (historical): Fuel injection servo plugs · Superior Air Parts AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 242 more. Effective Apr 29, 2008
- [AD 2008-06-51](https://openairdocs.org/ad/2008-06-51) (historical): Fuel injection servo plugs · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 235 more
- [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006
- [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006
- [AD 2002-26-01](https://openairdocs.org/ad/2002-26-01) (historical): Fuel injector fuel lines · Textron Lycoming, AVCO IGO-480-A1B6, IGO-540-B1A, IGO-540-B1C and 178 more. Effective Jan 31, 2003
- [AD 2000-18-53](https://openairdocs.org/ad/2000-18-53) (historical): Oil Filter Converter Plate Gaskets · Textron Lycoming, AVCO AEIO-540, IO-360-A1B6D, IO-360-A1D6D and 73 more
- [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998
- [AD 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982

## Information bulletins (advisory) (12 in force)

- [SAIB SW-12-10R1](https://openairdocs.org/saib/SW-12-10R1): Fuel Level Indication. Issued Feb 3, 2012
- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor  Idler Gear Shaft Set Screw. Issued May 13, 2016
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-13-06](https://openairdocs.org/saib/NE-13-06): Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series Engines. Issued Nov 21, 2012
- [SAIB NE-08-26R3](https://openairdocs.org/saib/NE-08-26R3): Magneto/Distributor. Issued Mar 31, 2011
- [SAIB NE-09-04](https://openairdocs.org/saib/NE-09-04): Fuel Control/Reciprocating Engines. Issued Jan 10, 2009
- [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008
- [SAIB NE-05-89](https://openairdocs.org/saib/NE-05-89): . Issued Sep 30, 2005
- [SAIB NE-05-40](https://openairdocs.org/saib/NE-05-40): . Issued Mar 18, 2005
- [SAIB NE-03-18](https://openairdocs.org/saib/NE-03-18): . Issued Jan 22, 2003
- [SAIB NE-01-22](https://openairdocs.org/saib/NE-01-22): . Issued May 11, 2001
- [SAIB NE-08-26R2](https://openairdocs.org/saib/NE-08-26R2) (historical): Magneto/Distributor. Issued Apr 22, 2010
- [SAIB NE-08-26R1](https://openairdocs.org/saib/NE-08-26R1) (historical): Dual Magnetos. Issued Jul 8, 2008
- [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008

## NTSB investigations

None matched to N4874.

## 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.

- [Incident 19960421012579I](https://openairdocs.org/incident/19960421012579I), Apr 21, 1996: Enstrm F28A (N4874), Lake Havasu Cit, AZ, Minor damage. Narrative: conducting over water aerial photography of boats, acft began to settle from 30-35 feet on downwind pass. Pilot began turn to upwind direction and…

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## Service difficulty reports on N4874 not matched to an aircraft (12)

They name N4874, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR CALA2020041300833](https://openairdocs.org/sdr/CALA2020041300833), Apr 13, 2020: DOOR FRAME. CRACKED. PERFORME ROTO INSP FND 2EA HOLE CRACK AT LH-FR68, DOOR STOP NO.1 LOWER INBOARD HOLE & LOWER OUTBOARD HOLE REF NON-ROUTINE NO.9407 207 - ORIGINATED EA 5340-0
- [SDR CALA2020041000813](https://openairdocs.org/sdr/CALA2020041000813), Apr 7, 2020: DOOR SILL. CORRODED. FR68 LH DOOR SILL AREA FND CORROSION REF NON-ROUTINE NO.9406285 - ORIGINATED SPEC NO.A3NB-53-3-6187. PERFORMED FR 66-68 L/H DOOR SILL RPELACED AS PER DWG E53474
- [SDR CALA2020040600791](https://openairdocs.org/sdr/CALA2020040600791), Apr 4, 2020: BATTERY. FAILED. DURING TEST FND ESPU BATT 10WL LOW VOLTAGE REF NON-ROUTINE NO. 9407440 - ORIGINATED SPEC NO.A3NB-33-3-6012. PERFORMED REPLACED THE BATT 10WL AND PERFORMED OPS C
- [SDR CALA2020040600794](https://openairdocs.org/sdr/CALA2020040600794), Apr 4, 2020: BATTERY. FAILED. DURING TEST FND ESPU BATT 13WL LOW VOLTAGE REF NON-ROUTINE NO. 9407437 - ORIGINATED SPEC NO.A3NB-33-3-6012. PERFORMED REPLACED THE BATT 13WL AND PERFORMED OPS C
- [SDR CALA2020040600793](https://openairdocs.org/sdr/CALA2020040600793), Apr 4, 2020: BATTERY. FAILED. DURING TEST FND ESPU BATT 12WL LOW VOLTAGE REF NON-ROUTINE NO. 9407438 - ORIGINATED SPEC NO.A3NB-33-3-6012. PERFORMED REPLACED THE BATT 12WL AND PERFORMED OPS C
- [SDR CALA2020040600792](https://openairdocs.org/sdr/CALA2020040600792), Apr 4, 2020: BATTERY. FAILED. DURING TEST FND ESPU BATT 11WL LOW VOLTAGE REF NON-ROUTINE NO. 9407439 - ORIGINATED SPEC NO.A3NB-33-3-6012. PERFORMED REPLACED THE BATT 11WL AND PERFORMED OPS C
- [SDR CALA2020040300776](https://openairdocs.org/sdr/CALA2020040300776), Apr 2, 2020: DOOR SILL. CORRODED. DOOR 2R DOOR SILL FND CORROSION UNDER AFT GIRT BAR FITTING AREA REF NON-ROUTINE NO.9407205 ORIGINATED SPEC NO.A3N B-53-3-6299. PERFORMED, 2R DOOR SILL REPLACED 
- [SDR CALA2020040300773](https://openairdocs.org/sdr/CALA2020040300773), Apr 1, 2020: STRINGER. CORRODED. BULK CARGO COMPT BILGE AREA FR63-64 ST43L CORROSION. BULK CARGO COMPT BILGE AREA FR63-6 STR43L REPAIRED AS PER EC/RA 5341-01219. NO FURTER ACTION REQUIRED. SEE 
- [SDR CALA2020032100655](https://openairdocs.org/sdr/CALA2020032100655), Mar 14, 2020: STRINGER. CORRODED. BULK CGO COMPT BILGE AREA FR64-65 STGR 42L STRINGER FND CORROSION REF NON-ROUTINE NO.9406486 - ORIGINATED BY EMP, SPEC NO.A3NB-53-3-6179.
- [SDR CALA2020032000637](https://openairdocs.org/sdr/CALA2020032000637), Mar 11, 2020: STRINGER. CORRODED. CORROSION BULK CARGO BILGE AREA STR42 BETWEEN FR62 & FR63. CORROSION REMOVED AS PER SRM 51-74-00. DAMAGED AREA REMOVED AND REPAIR INSTALLED AS PER SRM 53-00
- [SDR CALA2020032000636](https://openairdocs.org/sdr/CALA2020032000636), Mar 11, 2020: STRINGER. CORRODED. CORROSION BULK CARGO BILGE AREA STR44 BETWEEN FR63 & FR64. CORROSION REMOVED AS PER SRM 51-74-00. DAMAGED AREA REMOVED AND REPAIR INSTALLED AS PER SRM 53-00
- [SDR CALA2020032000635](https://openairdocs.org/sdr/CALA2020032000635), Mar 11, 2020: DOUBLER. CORRODED. FWD CGO COMPT BILGE AREA FR 30-34 STGR 44-43R DOUBLER UPPER SURF ACE FND CORROSION - REF NON-ROUTINE NO.9407101 ORIGINATED, SPEC NO.A3NB-53-3-6105. PERFORMED BY

## STCs that may be installed (OpenAirDocs) (95, first 50)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Enstrom F-28A)

- [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

### Approved for the engine (Lycoming I0360 series)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists IO-360-B1C
- [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc. Lists IO-360-A1A
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists IO-360-A1A
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company. Lists IO-360-A1A
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc. Lists IO-360-A1A
- [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines. B & C Specialty Products Inc. Lists IO-360-A1A
- [STC SE2389CE](https://openairdocs.org/stc/SE2389CE): Installation of B&C Speciality Products lightweight (10.2) pounds) engine starter, part number BC-315-100-1 (12 volts) or part number BC-315-100-3 (24 volts). B & C Specialty Products Inc. Lists IO-360-A1A
- [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc. Lists IO-360-A1A
- [STC SE32WE](https://openairdocs.org/stc/SE32WE): Installation of Turbocharger P/N 600573-00 (formerly RJ 0326, RJ 0326-1), 600576-00(formerly RJ 0326-2) and600577000 (formerly RJ 0329). TALCO Aviation. Lists IO-360-A1A
- [STC SE90WE](https://openairdocs.org/stc/SE90WE): Installation of Roto-Master (Rajay) Turbochargers Model 3AT6EE10J2 (325E10-1) P/N 600573-00 (RJ0331-1). TALCO Aviation. Lists IO-360-A1D6D

All 95: https://openairdocs.org/aircraft/N4874/stcs.md

## Related

- Other Enstrom F-28A aircraft: https://openairdocs.org/model/enstrom-f-28a/aircraft.md
- The Lycoming I0360 series engine: https://openairdocs.org/engine/lycoming-i0360-series.md

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