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

Lycoming LO-360-E1AD

1 aircraft on the U.S. register carry a Lycoming LO-360-E1AD engine, rated at about 180 horsepower. The Piper PA-44 Seminole is the model most often fitted with it (1 aircraft).

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 LO-360-E1AD. FAA spelling: LO-360-E1AD.

Fitted to model families

Piper PA-44 Seminole1

Piper PA-44 Seminole

Where they are owner's state

Colorado1

Kind of aircraft

Piston twins1 (100%)

When the aircraft were built by decade

0001111970

What the FAA has certified, ordered and been told about the Lycoming LO-360-E1AD the component layer

The design is held under 1 type certificate (E-286, held by Lycoming Engines). The FAA has issued 11 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 11 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
2006-01-312005-26-10 · ECi cylinder assemblies. · engine
1997-08-1297-15-11 · Cylinder kits · engine

All orders naming the Lycoming LO-360-E1AD

Certificates and bulletins

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

Safety bulletins 11 · advice, not orders

2022-09-26NE-06-31R6 · Engine Lubricating Oils
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
2011-10-19NE-06-31R5 · Engine Lubricating Oils

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-lo-360-e1ad.json · about the eFlight graph.

Aircraft newest certificates first · 1

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N442MK Piper
PA-44-180
Fixed-wing, multi-engine G&M Aircraft INC
Wheat Ridge, Colorado
Standard 2024-02-26 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.