Lycoming O-360-A1H6
106 aircraft on the U.S. register carry a Lycoming O-360-A1H6 engine, rated at about 180 horsepower. The Piper PA-44 Seminole is the model most often fitted with it (103 aircraft). The aircraft carrying it were built between 1996 and 2024.
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-A1H6. FAA spelling: O-360-A1H6.
Fitted to model families
Model families, as a table
| aircraft | |
|---|---|
| Piper PA-44 Seminole | 103 |
| Aviat Inc A-1 | 1 |
| Michael G Darby DARD 1 | 1 |
| Ryan Evans RV7-A | 1 |
Piper PA-44 Seminole · Aviat Inc A-1 · Michael G Darby DARD 1 · Ryan Evans RV7-A
Where they are owner's state
Kind of aircraft
By kind, as a table
| aircraft | share | |
|---|---|---|
| Piston twins | 103 | 97% |
| Piston singles | 3 | 3% |
What the FAA has certified, ordered and been told about the Lycoming O-360-A1H6 the component layer
The design is held under 1 type certificate (E-286, held by Lycoming Engines). The FAA has issued 20 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 169 failure reports with the FAA since 1995, 127 of them in the last ten years.
FAA orders 20 airworthiness directives · newest first
Failure reports 169 since · what operators and shops told the FAA
Failure reports by year, as a table
| reports | |
|---|---|
| 07 | 1 |
| 09 | 6 |
| 10 | 3 |
| 11 | 8 |
| 12 | 4 |
| 13 | 3 |
| 14 | 17 |
| 15 | 38 |
| 16 | 36 |
| 17 | 25 |
| 18 | 7 |
| 19 | 6 |
| 20 | 2 |
| 21 | 1 |
| 22 | 3 |
| 23 | 7 |
| 24 | 2 |
Parts most often reported as the reports name them
Parts most reported, as a table
| reports | |
|---|---|
| Angle | 12 |
| Stop | 11 |
| Doubler | 9 |
| Rib | 9 |
| Downlock Switch | 6 |
| Impulse Coupling | 6 |
| Pump | 6 |
| Pushrod | 6 |
| Plate | 5 |
| Spar | 5 |
Latest reports
Certificates and bulletins
Safety bulletins 6 · advice, not orders
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
- Piper PA-44 Seminole 103 with this engine series
- Aviat Inc A-1 1 with this engine series
- Delaware 45 of these aircraft
- Florida 15 of these aircraft
- North Dakota 8 of these aircraft
- Virginia 5 of these aircraft
- Texas 5 of these aircraft
- Dot Aviation LLC 12 of these aircraft
- Christiansen Aviation LLC 11 of these aircraft
- Aerosim Flight Academy 9 of these aircraft
- Und Aerospace Foundation 7 of these aircraft
- Texas Flight Training Aircraft 8 LLC 5 of these aircraft
- FAA orders naming the Lycoming O-360-A1H6 20 airworthiness directives
- Failure reports on the Lycoming O-360-A1H6 169 reports since 1995
These connections as data: /graph/engine/lycoming-o-360-a1h6.json · about the eFlight graph.
Aircraft newest certificates first · 106
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N2425A | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 7 LLC Wilmington, Delaware |
Standard | 2008-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N3117A | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 8 LLC Wilmington, Delaware |
Standard | 2008-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N6865A | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 7 LLC Wilmington, Delaware |
Standard | 2008-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N4917A | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 7 LLC Wilmington, Delaware |
Standard | 2008-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N813CN | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 7 LLC Wilmington, Delaware |
Standard | 2008-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N9802A | Piper Aircraft Inc PA-44-180 |
Fixed-wing, multi-engine | Atp Aircraft 7 LLC Wilmington, Delaware |
Standard | 2008-07-11 | 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.