Lycoming HIO-360-F1AD
33 aircraft on the U.S. register carry a Lycoming HIO-360-F1AD engine, rated at about 190 horsepower. The Enstrom 280 Shark is the model most often fitted with it (20 aircraft). The aircraft carrying it were built between 1981 and 2026.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Lycoming HIO-360-F1AD. FAA spelling: HIO-360-F1AD.
Fitted to model families
Enstrom 280 Shark20Enstrom F-286Enstrom Helicopter Corp 2806Enstrom Helicopter Corp F28F1
Enstrom 280 Shark · Enstrom F-28 · Enstrom Helicopter Corp 280 · Enstrom Helicopter Corp F28F
Where they are owner's state
Michigan5Texas4Delaware4Arkansas3Washington2Montana2Arizona2Vermont1Pennsylvania1Oklahoma1
Kind of aircraft
Helicopters33 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming HIO-360-F1AD the component layer
The design is held under 1 type certificate (1E10, held by Lycoming Engines). The FAA has issued 23 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 13 failure reports with the FAA since 1995, 2 of them in the last ten years.
FAA orders 23 airworthiness directives · newest first
2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2012-01-252011-26-04 · Externally mounted fuel injector fuel lines · engine
2011-08-162011-15-10 · Fuel servos · engine
Failure reports 13 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Capacitor2Adapter1Bearing1Condenser1Crankcase1Cylinder1Line1Points1Rocker Cover1Rocker Shaft1
Latest reports
2016-10-08Cylinder: broken
2008-03-04Bearing: seized
2005-09-30Adapter: broken
2005-03-08Spacer: cracked
2002-01-04Line: broken
Certificates and bulletins
1E10Type certificate held by Lycoming Engines · 89 models listed · revised May 4, 2020
Safety bulletins 5 · advice, not orders
2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2011-03-31NE-08-26R3 · Magneto/Distributor
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
2008-07-08NE-08-26R1 · Dual Magnetos
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how this engine series links to the rest of the register
Fitted to
- Enstrom 280 Shark 20 with this engine series
- Enstrom F-28 6 with this engine series
- Enstrom Helicopter Corp 280 6 with this engine series
Where they are
- Michigan 5 of these aircraft
- Texas 4 of these aircraft
- Delaware 4 of these aircraft
- Arkansas 3 of these aircraft
- Washington 2 of these aircraft
Biggest operators
- Enstrom Helicopter CORP 5 of these aircraft
Airworthiness
- FAA orders naming the Lycoming HIO-360-F1AD 23 airworthiness directives
- Failure reports on the Lycoming HIO-360-F1AD 13 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-hio-360-f1ad.json · about the eFlight graph.
Aircraft newest certificates first · 33
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N1477Q | Enstrom Helicopter Corp 280FX |
Rotorcraft | Dd & Cd LLC Harrison, Arkansas |
Standard | 2026-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N8900X | Enstrom 280FX |
Rotorcraft | Rotorcraft LLC Lake Havasu City, Arizona |
Standard | 2026-04-27 | ValidFAA registration status code V: Valid registration. All codes |
| N307RT | Enstrom F-28F |
Rotorcraft | Northwest Aircraft LLC Anaconda, Montana |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N962SM | Enstrom 280FX |
Rotorcraft | Wheels Flying Service LLC Kalispell, Montana |
Standard | 2025-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N942MA | Enstrom F-28F |
Rotorcraft | Individual owner Iowa |
Standard | 2025-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N663DS | Enstrom 280FX |
Rotorcraft | Individual owner Texas |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N28SH | Enstrom Helicopter Corp F28F |
Rotorcraft | Individual owner Vermont |
Standard | 2025-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N409HT | Enstrom 280FX |
Rotorcraft | Helidon INC Willmington, Delaware |
Standard | 2025-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N965C | Enstrom 280FX |
Rotorcraft | Co-owned owner Texas |
Standard | 2025-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N454P | Enstrom 280FX |
Rotorcraft | Co-owned owner Texas |
Standard | 2025-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1479Y | Enstrom Helicopter Corp 280FX |
Rotorcraft | Monadnock Choppers LLC North Swanzey, New Hampshire |
Standard | 2024-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N704D | Enstrom 280FX |
Rotorcraft | Individual owner Texas |
Standard | 2024-07-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3842D | Enstrom 280FX |
Rotorcraft | Beacon Aviation Flight Services LLC Rogers, Arkansas |
Standard | 2024-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N98FW | Enstrom F-28F |
Rotorcraft | Individual owner Ohio |
Restricted | 2023-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N136HA | Enstrom Helicopter Corp 280FX |
Rotorcraft | Enstrom Helicopter CORP Menominee, Michigan |
Experimental | 2023-07-14 | ValidFAA registration status code V: Valid registration. All codes |
| N28N | Enstrom 280FX |
Rotorcraft | Enstrom Helicopter CORP Menominee, Michigan |
Standard | 2022-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N228F | Enstrom F-28F |
Rotorcraft | Enstrom Helicopter CORP Menominee, Michigan |
Experimental | 2022-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N17BZ | Enstrom F-28F |
Rotorcraft | Cotton AG INC Walters, Oklahoma |
Restricted | 2021-07-12 | ValidFAA registration status code V: Valid registration. All codes |
| N35DH | Enstrom 280FX |
Rotorcraft | Zebcon INC Russellville, Arkansas |
Standard | 2021-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N898SY | Enstrom 280FX |
Rotorcraft | Individual owner Hawaii |
Standard | 2021-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N286SH | Enstrom 280FX |
Rotorcraft | Co-owned owner Washington |
Standard | 2021-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N761DA | Enstrom 280FX |
Rotorcraft | King Air 76 LLC Lewes, Delaware |
Standard | 2020-10-20 | ValidFAA registration status code V: Valid registration. All codes |
| N288SH | Enstrom F-28F |
Rotorcraft | J&J Shop Heliair LLC Laurel, Delaware |
Standard | 2020-02-07 | ValidFAA registration status code V: Valid registration. All codes |
| N43LA | Enstrom 280FX |
Rotorcraft | Individual owner Pennsylvania |
Standard | 2019-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N285TR | Enstrom 280FX |
Rotorcraft | Individual owner New Mexico |
Standard | 2015-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N286RT | Enstrom 280FX |
Rotorcraft | N286Rt LLC Wilmington, Delaware |
Standard | 2012-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N151BY | Enstrom 280FX |
Rotorcraft | Corporate Leasing Services LLC Phoenix, Arizona |
Standard | 2011-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N652MT | Enstrom 280FX |
Rotorcraft | Individual owner Washington |
Standard | 2010-02-10 | ValidFAA registration status code V: Valid registration. All codes |
| N776HC | Enstrom 280FX |
Rotorcraft | Cyclic Aviation LLC Millbrook, New York |
Standard | 2009-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N269PE | Enstrom Helicopter Corp 280FX |
Rotorcraft | Enstrom Helicopter CORP Menominee, Michigan |
Experimental | ValidFAA registration status code V: Valid registration. All codes | |
| N280BR | Enstrom 280FX |
Rotorcraft | Individual owner Colorado |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N280EH | Enstrom Helicopter Corp 280FX |
Rotorcraft | Enstrom Helicopter CORP Menominee, Michigan |
Experimental | ValidFAA registration status code V: Valid registration. All codes | |
| N289SH | Enstrom Helicopter Corp 280FX |
Rotorcraft | Individual owner Alaska |
Standard | PendingFAA registration status code R: Registration pending. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.