Lycoming IO-390-A1B6
47 aircraft on the U.S. register carry a Lycoming IO-390-A1B6 engine, rated at about 210 horsepower. The American Champion Aircraft 8 Decathlon and Scout is the model most often fitted with it (46 aircraft). The aircraft carrying it were built between 2006 and 2025.
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 IO-390-A1B6. FAA spelling: IO-390-A1B6.
Fitted to model families
American Champion Aircraft 8 Decathlon and Scout46Interstate Aircraft Co Inc S-1B21
American Champion Aircraft 8 Decathlon and Scout · Interstate Aircraft Co Inc S-1B2
Where they are owner's state
Texas5Idaho5Delaware4California4Wisconsin3Illinois3Colorado3Wyoming2Washington2Utah2
Kind of aircraft
Piston singles47 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming IO-390-A1B6 the component layer
The design is held under 1 type certificate (E00006NY, held by Lycoming Engines). The FAA has issued 5 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 3 failure reports with the FAA since 1995, 3 of them in the last ten years.
FAA orders 5 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
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2009-02-092009-02-03 · Fuel injection servos · engine
Failure reports 3 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Blade1Bracket1Spark Plug1
Latest reports
2025-02-13Bracket: broken
2023-05-29Blade: broken
2016-05-02Spark Plug: broken
Certificates and bulletins
E00006NYType certificate held by Lycoming Engines · 17 models listed · revised January 12, 2023
Safety bulletins 2 · 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
Fitted to
- American Champion Aircraft 8 Decathlon and Scout 46 with this engine series
Where they are
- Texas 5 of these aircraft
- Idaho 5 of these aircraft
- Delaware 4 of these aircraft
- California 4 of these aircraft
- Wisconsin 3 of these aircraft
Biggest operators
- Twist Air INC 2 of these aircraft
- Zeliff Aviation LLC 1 of these aircraft
Airworthiness
- FAA orders naming the Lycoming IO-390-A1B6 5 airworthiness directives
- Failure reports on the Lycoming IO-390-A1B6 3 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-io-390-a1b6.json · about the eFlight graph.
Aircraft newest certificates first · 47
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N155BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N468DR | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N474HB | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner Wisconsin |
Standard | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N24SD | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N565T | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Echo Baravo LLC Geneva, Illinois |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N668BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N615DD | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Shady Aviation LLC Beebe, Arkansas |
Standard | 2025-04-14 | ValidFAA registration status code V: Valid registration. All codes |
| N399BZ | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Berjon Adventures LLC Evergreen, Colorado |
Standard | 2025-01-13 | ValidFAA registration status code V: Valid registration. All codes |
| N848AC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | 2024-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N975BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2024-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N701EP | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Erpco LLC Wilmington, Delaware |
Standard | 2024-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N69GC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2024-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N625T | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Oil Belt LLC Lewes, Delaware |
Standard | 2024-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N788AB | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Southwind Ventures INC Madison, Wisconsin |
Standard | 2024-04-26 | ValidFAA registration status code V: Valid registration. All codes |
| N636DB | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Vectored Solutions INC Everett, Washington |
Standard | 2024-02-29 | ValidFAA registration status code V: Valid registration. All codes |
| N870DH | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Johnson Hangar LLC Ridgway, Colorado |
Standard | 2024-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N518BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | N815Bc LLC Post Falls, Idaho |
Standard | 2023-09-08 | ValidFAA registration status code V: Valid registration. All codes |
| N395T | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | East Iowa Air INC Bennett, Iowa |
Standard | 2023-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N805TT | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Tim Twisselman Enterprises INC San Luis Obispo, California |
Standard | 2023-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N685T | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Bowman and Dehn Enterprises INC Georgetown, Delaware |
Standard | 2023-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N587S | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2023-02-02 | ValidFAA registration status code V: Valid registration. All codes |
| N64PZ | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Mountain Aeroscout Adventures LLC Park City, Utah |
Standard | 2023-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N956DP | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Infinity Aviation LLC Comstock, Wisconsin |
Standard | 2022-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N815BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | N815Bc LLC Post Falls, Idaho |
Standard | 2022-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N239LL | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Lloyd Land Plane V LLC Brighton, Colorado |
Standard | 2022-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N657MV | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Leyden Aviation LLC Dover, Delaware |
Standard | 2021-12-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4DG | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | 4Dg LLC Tacoma, Washington |
Standard | 2021-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N55VM | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner New York |
Standard | 2021-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N15MM | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2021-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N40SG | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Zeliff Aviation LLC Batavia, New York |
Standard | 2020-11-04 | ValidFAA registration status code V: Valid registration. All codes |
| N876SW | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Cbc Aviation LLC Hayden, Idaho |
Standard | 2020-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N141BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Atkinson Air LLC Dixon, California |
Standard | 2020-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N625ML | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2019-12-30 | ValidFAA registration status code V: Valid registration. All codes |
| N299BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner Utah |
Standard | 2019-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N825RH | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Wyoming |
Standard | 2019-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N9NE | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Maine |
Standard | 2019-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N660BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2018-12-31 | ValidFAA registration status code V: Valid registration. All codes |
| N580K | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | G Force Air LLC Columbus, Ohio |
Standard | 2018-10-29 | ValidFAA registration status code V: Valid registration. All codes |
| N311PM | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Gullwing Research LLC Boise, Idaho |
Standard | 2018-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N600BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner Oregon |
Standard | 2018-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N394RL | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Co-owned owner Wyoming |
Standard | 2018-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N308K | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | S J Fox Farm LLC Corning, Arkansas |
Standard | 2013-03-28 | ValidFAA registration status code V: Valid registration. All codes |
| N801AT | Interstate Aircraft Co Inc S-1B2 |
Fixed-wing, single engine | Arctic Tern Aviation LLC Dallas, Texas |
Experimental | 2008-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N13WL | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N559BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Twist Air INC Overland Park, Kansas |
Standard | ValidFAA registration status code V: Valid registration. All codes | |
| N898T | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Twist Air INC Overland Park, Kansas |
Standard | ValidFAA registration status code V: Valid registration. All codes | |
| N985BC | American Champion Aircraft 8GCBC |
Fixed-wing, single engine | Northwest Back Country Aircraft LLC Caldwell, Idaho |
Standard | 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.