ENSTROM F-28A

01 /  Distribution

Where the fleet lives and was built

Counts of currently-registered ENSTROM F-28A aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.

02 /  NTSB Records

Events involving ENSTROM F-28A aircraft

25 event(s) on file. Showing the most recent 25.

• Jul 28, 2021

  N46MU

  Mountain Home, Idaho

  NTSB Docket →

• Jan 29, 2014

  N24RB

  Memphis, Tennessee

  NTSB Docket →

• Sep 16, 2012

  N194E

  Fort Worth, Texas

  NTSB Docket →

• Aug 23, 2004

  N9573

  Leroy, Minnesota Serious

  NTSB Docket →

• Jun 5, 2001

  N9565

  Double Springs, Alabama Minor

  NTSB Docket →

• Oct 15, 1994

  N9238

  SHELBURNE, Vermont Minor

  NTSB Docket →

• Aug 16, 1994

  N13CM

  STEWARTSVILLE, New Jersey

  NTSB Docket →

• May 30, 1993

  N173

  BUENA VISTA, Colorado Serious

  NTSB Docket →

• Jun 5, 1992

  N296Q

  MALVERN, Pennsylvania

  NTSB Docket →

• Mar 29, 1990

  N200EH

  CHEVAK, Alaska

  NTSB Docket →

• May 7, 1987

  N13CM

  FAYETTEVILLE, Arkansas

  NTSB Docket →

• Aug 4, 1984

  N56U

  AUGUSTA, Maine Serious

  NTSB Docket →

• Jul 3, 1984

  N13CM

  MUNCIE, Indiana

  NTSB Docket →

• Apr 27, 1983

  N519H

  SCHAUMBURG, Illinois

  NTSB Docket →

• Nov 11, 1980

  N90775

  LIMA, Pennsylvania Minor

  NTSB Docket →

• Jan 20, 1979

  N520H

  SHAFTER, California

  NTSB Docket →

• Apr 6, 1978

  N24RB

  BLOOMINGTON, Illinois

  NTSB Docket →

• Sep 13, 1977

  N297Q

  FAYETTEVILLE, North Carolina

  NTSB Docket →

• Aug 18, 1977

  N286Q

  LUBBOCK, Texas

  NTSB Docket →

• Apr 5, 1976

  N9576

  PASADENA, California

  NTSB Docket →

• Nov 3, 1975

  N494H

  HOUSTON, Texas

  NTSB Docket →

• Jun 23, 1975

  N9077

  BOISE, Idaho

  NTSB Docket →

• Mar 8, 1975

  N9244

  COLUMBIA, South Carolina

  NTSB Docket →

• Jan 19, 1975

  N9238

  NEW HOPE, Pennsylvania

  NTSB Docket →

• Jun 22, 1974

  N9591

  TETERBORO, New Jersey

  NTSB Docket →

03 /  Airworthiness Directives

FAA directives applicable to ENSTROM F-28A

12 directive(s) on file. Showing the most recent 12.

• Jan 17, 2018

  Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters

  We are superseding Airworthiness Directive (AD) 2015-08-51 for the Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F-28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters. AD 2015-08-51 required an inspection of the main rotor spindle (spindle) and reporting the inspection results t…

  Atlas AD → Federal Register ↗

• Dec 20, 2017

  Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters

  We are adopting a new airworthiness directive (AD) for the Enstrom Helicopter Corporation (Enstrom) Model F-28, F-28A, F-28C, F- 28C-2, F-28C-2R, F-28F, F-28F-R, TH-28, 280, 280C, 280F, 280FX, 480, and 480B helicopters. This AD requires inspecting certain rod end bearing assemblies. This AD is prompted by an accident.…

  Atlas AD → Federal Register ↗

• Mar 2, 2017

  Airworthiness Directives; The Enstrom Helicopter Corporation

  We propose to supersede airworthiness directive (AD) 2015-08- 51 for Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F- 28C, F-28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters. AD 2015-08-51 requires an inspection of the main rotor spindle (spindle) and reporting the inspection result…

  Atlas AD → Federal Register ↗

• May 18, 2015

  Airworthiness Directives; The Enstrom Helicopter Corporation

  We are publishing a new airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280, F-28C, F- 28C-2, F-28C-2R, 280C, F-28F, F-28F-R, 280F, 280FX, and 480 helicopters. This AD was sent previously to all known U.S. owners and operators of these helicopters and supersedes Emergency AD (EAD…

  Atlas AD → Federal Register ↗

• Aug 28, 2007

  Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-28C, F-28F, TH-28, 280, 280C, 280F, 280FX, 480, and 480B Helicopters

  This amendment adopts a new airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28A, F-28C, F-28F, TH- 28, 280, 280C, 280F, 280FX, 480, and 480B helicopters that requires determining the installation dates for each main rotor push-pull control rod (push-pull rod), inspecting the push-pull…

  Atlas AD → Federal Register ↗

• Jul 31, 2007

  Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B Helicopters

  This amendment adopts a new airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28, F-28A, F-28C, F- 28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B helicopters. This action requires a visual check to determine if a certain serial-numbered main rotor blade re…

  Atlas AD → Federal Register ↗

• Jan 8, 2007

  Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-28C, F-28F, TH-28, 280, 280C, 280F, 280FX, 480, and 480B Helicopters

  This document proposes adopting a new airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28A, F-28C, F-28F, TH-28, 280, 280C, 280F, 280FX, 480, and 480B helicopters. The AD would require determining the installation dates for each main rotor push-pull control rod (push-pull rod), inspect…

  Atlas AD → Federal Register ↗

• Apr 17, 2002

  Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX Helicopters

  This amendment supersedes an existing airworthiness directive (AD) for Enstrom Helicopter Corporation (EHC) Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX helicopters. That AD currently requires determining the radius of the shaft fillet, performing certain visual and dye-penetrant inspections before furt…

  Atlas AD → Federal Register ↗

• Oct 29, 2001

  Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F and 280FX Helicopters

  This amendment supersedes an existing airworthiness directive (AD) for Enstrom Helicopter Corporation (EHC) Model F-28, F-28A, and 280 helicopters. That AD currently requires inspecting the main rotor shaft (shaft) for a crack or other evidence of damage until appropriately modifying or replacing the shaft with an air…

  Atlas AD → Federal Register ↗

• Sep 22, 1997

  Airworthiness Directives; Enstrom Helicopter Corporation Model F- 28A, F-28C, 280 and 280C Helicopters

  This amendment adopts a new airworthiness directive (AD) that is applicable to Enstrom Helicopter Corporation (Enstrom) Model F-28A, 280 and certain serial-numbered F-28C and 280C helicopters. This action requires an inspection of the voltage control system and an owner/ operator (pilot) cockpit check of the amperage…

  Atlas AD → Federal Register ↗

• Mar 19, 1996

  Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters

  This amendment supersedes an existing airworthiness directive (AD), applicable to The Enstrom Helicopter Corporation (Enstrom) Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX helicopters, that currently requires initial and repetitive inspections of a certain main rotor transmission clutch assembl…

  Atlas AD → Federal Register ↗

• Jul 6, 1994

  Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28A, F-28C, F-28C-2, 280, and 280C Series Helicopters

  This document proposes the supersedure of an existing airworthiness directive (AD), applicable to The Endstrom Helicopter Corporation Model F-28A, F-28C, 280, and 280C series helicopters, that currently requires an initial and repetitive visual inspections of the upper swashplate bearings for corrosion, and replacemen…

  Atlas AD → Federal Register ↗

04 /  Type Certificate Data Sheets

FAA TCDS for ENSTROM F-28A

The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 1 match in the FAA catalog.

• H1CE Historical Rev 35 · 12/15/2015

  The Enstrom Helicopter Corporation

  Models: F-28C, F-28F, TH-28, F-28A + 10 more

  Atlas TCDS → DRS ↗

06 /  Supplemental Type Certificates

Modifications approved for ENSTROM F-28A

75 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.

• 12/22/2023

  STC SR00063DE

  Installation of Inframetrics IRTV-445G infrared imaging system.

  Dart Aerospace Company

  Atlas STC → DRS ↗

• 04/14/2023

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 04/04/2023

  STC SA11137SC

  Installation of Plane-Power ALT-FLX alternator

  Hartzell Engine Technologies, LLC

  Atlas STC → DRS ↗

• 12/17/2020

  STC SR02704SE

  Installation and maintenance of the Sunspot 36 and 46 series lights

  AeroLED's Holdings LLC

  Atlas STC → DRS ↗

• 12/17/2020

  STC SR02704SE

  Installation and maintenance of the Sunspot 36 and 46 series lights

  AeroLEDS LLC

  Atlas STC → DRS ↗

• 06/04/2020

  STC SA02268CH (PAGE 5)

  Installation of Airwolf Filter Corp. Air Oil Separator

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 05/19/2020

  STC SH3319NM (1 OF 2)

  Installation of Precise Flight Pulselite Control Unit in the\nLanding /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 02/17/2020

  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

  Atlas STC → DRS ↗

• 05/29/2019

  STC SR00359BO

  Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.

  Whelen Aerospace Technologies

  Atlas STC → DRS ↗

• 12/20/2017

  STC SR00568NY

  Installation of remote mounted oil filter, model AFC-500 or AFC-600, and kit AFC-K014.

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 12/20/2017

  STC SA02268CH (PAGE 5)

  Installation of Airwolf Filter Corp. Air Oil Separator

  Airwolf Filter Corporation

  Atlas STC → DRS ↗

• 05/23/2017

  STC SR02487AK

  Installation of L-3 Communications Avionics Systems ESI-500 Standby Instrument System

  ADS-B Technologies, LLC

  Atlas STC → DRS ↗

• 12/29/2016

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 11/28/2016

  STC SR00359BO

  Installation of Parmetheus Plus LED PAR36 and PAR46 taxi and landing lights.

  Whelen Engineering Co Inc

  Atlas STC → DRS ↗

• 11/11/2016

  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

  Atlas STC → DRS ↗

• 03/04/2016

  STC SR02470AK

  Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System

  ADS-B Technologies, LLC

  Atlas STC → DRS ↗

• 03/04/2016

  STC SR02471AK

  Installation of the L-3 Communications NGT -9000/9000R ADS-B System

  ADS-B Technologies, LLC

  Atlas STC → DRS ↗

• 02/16/2016

  STC SR02470AK

  Installation of the L-3 Communications NGT -1000/2000/2500 ADS-B System

  ADS-B Technologies LLC

  Atlas STC → DRS ↗

• 02/16/2016

  STC SR02471AK

  Installation of the L-3 Communications NGT -9000/9000R ADS-B System

  ADS-B Technologies LLC

  Atlas STC → DRS ↗

• 06/08/2015

  STC SR03465CH

  Install Airwolf Aerospace, LLC Tension-Torsion Strap Assemblies, P/N AA-ECD-084-280, or AA-ECD-084-480

  Airwolf Aerospace LLC

  Atlas STC → DRS ↗

• 04/03/2015

  STC SR03520NY

  Installation of Rotor Head Cover

  Spitfire Aerospace, LLC

  Atlas STC → DRS ↗

• 01/14/2015

  STC SR02394AK

  Replacement of existing landing and/or hover light bulbs with Light Emitting Diode (LED) lighting system

  Seaplanes North LLC

  Atlas STC → DRS ↗

• 11/24/2014

  STC SH4061NM

  Installation of Pneumatic Door Actuators

  Air Comm Corporation

  Atlas STC → DRS ↗

• 09/03/2014

  STC SA01669CH

  Installation of Challenger Reusable Air Filter

  Challenger Aviation Products Inc.

  Atlas STC → DRS ↗

• 07/17/2014

  STC SA11137SC

  Installation of Plane-Power ALT-FLX alternator

  Hartzell Engine Technologies, LLC

  Atlas STC → DRS ↗

• 07/08/2014

  STC SR03353CH

  Installation of Aspen Avionics Evolution Primary and Multi-Functional Flight Displays

  AspenSTC Inc

  Atlas STC → DRS ↗

• 06/09/2014

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 07/25/2013

  STC SH3319NM

  Installation of Precise Flight Pulselite Control Unit in the Landing /Taxi Recognition Visual Control Light system,

  Precise Flight Inc

  Atlas STC → DRS ↗

• 05/10/2013

  STC SA11137SC

  Installation of Plane-Power ALT-FLX alternator

  Plane Power Ltd.

  Atlas STC → DRS ↗

• 04/12/2013

  STC SA00861SE

  Installation of J.P. Instruments (JPI) fuel flow indicating system

  J P Instruments

  Atlas STC → DRS ↗

+ 45 more STCs on file

07 /  PMA replacement parts

FAA-approved replacement parts for ENSTROM F-28A

6 parts on file from the FAA Parts Manufacturer Approval database. Each is a non-OEM part the FAA has authorized for use as a replacement on this aircraft type.

• 96394-01#https://drs.faa.gov/browse/excelExternalWindow/D61885C356FABE7286258439006DEF02.0001##

  ENGINE MOUNT

  Hutchinson Aerospace & Industry Inc replaces 96394-01

  PMA holder →

• A8110-G#https://drs.faa.gov/browse/excelExternalWindow/0D78A94A765EF0428625818B00617057.0001##

  Pump-Motor Assembly

  Weldon Pump replaces Weldon Pump A8110-G, The Enstrom Helicopter Corporation P/N A8110-G

  PMA holder →

• A8110-C#https://drs.faa.gov/browse/excelExternalWindow/832313CF5ECB83578625818B00617003.0001##

  Pump-Motor Assembly

  Weldon Pump replaces Weldon Pump A8110-C, The Enstrom Helicopter Corporation A8110-C

  PMA holder →

• A10019-E#https://drs.faa.gov/browse/excelExternalWindow/A43393C3FB19A1D08625818B00616FAA.0001##

  Pump-Motor Assembly

  Weldon Pump replaces Weldon Pump A10019-E, The Enstrom Helicopter Corporation A10019-E

  PMA holder →

• 10-357290-1#https://drs.faa.gov/browse/excelExternalWindow/60264AF302AFF2898625810200794B69.0001##

  Switch, Ignition

  Continental Motors Inc replaces 10-357290-1

  PMA holder →

• CP-4423#https://drs.faa.gov/browse/excelExternalWindow/BF2B84DA5A7357F08625780E006F5D51.0001##

  Air Filter

  Challenger Aviation Products Inc replaces Fram CA151PL AC A53C Purolater AFP5

  PMA holder →

04 /  Regulations watching this type

Advisory Circulars and Federal Register activity for ENSTROM F-28A

05 /  Aircraft of this type

All 38 registered N-numbers

Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.

05 /  Sources & Methodology

Every count traces back to a primary US-government source

• FAA Aircraft Registry →

  Refreshed Apr 27, 2026

  Available

• NTSB CAROL →

  Refreshed Apr 27, 2026

  Available

• Federal Register (FAA Airworthiness Directives) →

  Refreshed Apr 27, 2026

  Available

We render counts and lists as the agency publishes them. Read the methodology →