- Registered owner
- Knutsen Wayne R
- Location
- Thompson, ND
- Owner type
- Individual
- Serial number
- 25-7556163
- Year built
- 1975
- Type
- Fixed wing single engine
- Engine
- Reciprocating
- Airworthiness
- Restricted, agriculture and pest control
- Airworthiness date
- April 8, 1975
- Certificate issued
- January 2, 2019
- Expires
- January 31, 2029
- Mode S code
- ADBCF2
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Lycoming 0-540 model are included below.
On this page
Airworthiness directives that may apply · 56
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1963 | 3 |
|---|---|
| 1964 | 2 |
| 1965 | 1 |
| 1966 | 2 |
| 1967 | 1 |
| 1969 | 2 |
| 1973 | 1 |
| 1974 | 2 |
| 1977 | 3 |
| 1979 | 2 |
| 1980 | 1 |
| 1982 | 1 |
| 1989 | 2 |
| 1990 | 1 |
| 1992 | 1 |
| 1995 | 2 |
| 1996 | 3 |
| 1997 | 2 |
| 1998 | 1 |
| 1999 | 3 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 2 |
| 2004 | 2 |
| 2005 | 2 |
| 2006 | 4 |
| 2007 | 2 |
| 2008 | 1 |
| 2010 | 2 |
| 2011 | 1 |
| 2012 | 2 |
| 2014 | 1 |
| 2015 | 1 |
| 2017 | 1 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 2 |
Airframe · Piper PA-25-235
AD 2015-08-04WingsAD 2007-08-07Horizontal stabilizerAD 2006-12-07ECi cylinder assembliesInformation bulletins that may apply · 10
Advisory, not mandatory.
Airframe · Piper PA-25-235
SAIB ACE-96-10Engine · Lycoming 0-540 series
SAIB NE-19-08Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve CylindersSAIB NE-08-32R1Propeller Governor Idler Gear Shaft Set ScrewSAIB NE-14-13Reciprocating Engine - Cylinder Mounting StudsSAIB NE-13-06Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series EnginesSAIB NE-08-26R3Magneto/DistributorSAIB NE-06-32R1Reciprocating Engine - CrankshaftSAIB NE-05-40SAIB NE-03-18SAIB NE-03-12Historical bulletins · 2
NTSB investigations · 1
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports
No reports matched to N9844PGeneral 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 Piper PA-25-235 aircraft
STCs that may be installed · 164
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Piper PA-25-235
STC SA04837NYInstallation of AeroLED's Holdings, LLC., position lights, navigation lights, strobe lights and beacon lightsSTC SA04652CHTo allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specificationSTC SA01147WIInstallation of Concorde FLA or VRSLA series batteries in Piper Light Airplanes.