- Registered owner
- Woodhouse William H
- Location
- Power, MT
- Owner type
- Individual
- Serial number
- 975
- Type
- Fixed wing single engine
- Engine
- Reciprocating
- Airworthiness
- Experimental, amateur built
- Airworthiness date
- November 10, 1987
- Certificate issued
- February 17, 2004
- Expires
- October 31, 2029
- Mode S code
- AD973D
From the FAA registry file of October 22, 2026. The registry lists only the engine series, so ADs for every Lycoming 0-320 model are included below.
On this page
Airworthiness directives that may apply · 39
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1964 | 1 |
|---|---|
| 1966 | 1 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1977 | 2 |
| 1978 | 2 |
| 1979 | 2 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 1 |
| 1988 | 1 |
| 1989 | 1 |
| 1991 | 1 |
| 1992 | 1 |
| 1993 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 3 |
| 2002 | 1 |
| 2004 | 1 |
| 2006 | 2 |
| 2007 | 1 |
| 2008 | 1 |
| 2010 | 2 |
| 2012 | 1 |
| 2017 | 1 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Engine · Lycoming 0-320 series
AD 2026-04-11Engine (Reciprocating)AD 2022-16-03Engine (RECIPROCATING)AD 2017-16-11Reciprocating Engine Power SectionInformation bulletins that may apply · 9
Advisory, not mandatory.
See all 17 bulletins
NTSB investigations
No NTSB investigations matched to N975LLMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Warnick Ronald S RV-4 aircraft
FAA incident reports
No FAA accident or incident reports matched to N975LLMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Warnick Ronald S RV-4 aircraft
Service difficulty reports
No reports matched to N975LLGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Warnick Ronald S RV-4 aircraft
STCs that may be installed · 70
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Engine · Lycoming 0-320 series
STC SE04651CHTo allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22STC SE00825WIInstallation of Specialty Products Spin-on oil filter on Lycoming Engines.STC SE2932SWInstall carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.