The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-360-A1H

8 aircraft on the U.S. register carry a Lycoming O-360-A1H engine, rated at about 180 horsepower. The Piper PA-44 Seminole is the model most often fitted with it (8 aircraft). The aircraft carrying it were built between 2006 and 2007.

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 O-360-A1H. FAA spelling: O-360-A1H.

Fitted to model families

Piper PA-44 Seminole8

Piper PA-44 Seminole

Where they are owner's state

Delaware6Michigan1Florida1

Kind of aircraft

Piston twins8 (100%)

When the aircraft were built by decade

0246882000

What the FAA has certified, ordered and been told about the Lycoming O-360-A1H the component layer

The design is held under 1 type certificate (E-286, held by Lycoming Engines). The FAA has issued 17 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 31 failure reports with the FAA since 1995, 23 of them in the last ten years.

FAA orders 17 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2012-10-242012-19-01 · Crankshafts · engine
2012-03-272012-03-07 · Carburetor · engine
2008-10-202008-19-05 · Parallel Valve'' reciprocating engines · engine
2006-01-312005-26-10 · ECi cylinder assemblies. · engine

All orders naming the Lycoming O-360-A1H

Failure reports 31 since · what operators and shops told the FAA

024689697989901020304050607110

Parts most often reported as the reports name them

Rib3Spring3Battery Pack2Control Cable2Drain Plug2Spar2Air Box1Baffle1Distributor Gear1Filter1

Latest reports

2010-07-09Structure: torn
2007-08-13Spring: broken
2006-06-20Flange: cracked
2006-04-24Spar: cracked
2006-04-24Rib: cracked

Certificates and bulletins

E-286Type certificate held by Lycoming Engines · 72 models listed · revised April 30, 2013

Safety bulletins 6 · advice, not orders

2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2016-05-13NE-08-32R1 · Propeller Governor Idler Gear Shaft Set Screw
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2012-11-21NE-13-06 · Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320,...
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft

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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/lycoming-o-360-a1h.json · about the eFlight graph.

Aircraft newest certificates first · 8

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N881FT Piper Aircraft Inc
PA-44-180
Fixed-wing, multi-engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N492ND Piper
PA-44-180
Fixed-wing, multi-engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-09-13 ValidFAA registration status code V: Valid registration. All codes
N588ND Piper
PA-44-180
Fixed-wing, multi-engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-16 ValidFAA registration status code V: Valid registration. All codes
N3111K Piper Aircraft Inc
PA-44-180
Fixed-wing, multi-engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-08-04 ValidFAA registration status code V: Valid registration. All codes
N1019T Piper
PA-44-180
Fixed-wing, multi-engine Andrew University
Berrien Springs, Michigan
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N766A Piper Aircraft Inc
PA-44-180
Fixed-wing, multi-engine Atp Aircraft 6 LLC
Wilmington, Delaware
Standard 2007-12-03 ValidFAA registration status code V: Valid registration. All codes
N756A Piper Aircraft Inc
PA-44-180
Fixed-wing, multi-engine Atp Aircraft 6 LLC
Wilmington, Delaware
Standard 2007-11-30 ValidFAA registration status code V: Valid registration. All codes
N746A Piper Aircraft Inc
PA-44-180
Fixed-wing, multi-engine Atp Aircraft 6 LLC
Wilmington, Delaware
Standard 2007-11-28 ValidFAA registration status code V: Valid registration. 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.