- Registered owner
- Mcwilliams Robert P
- Location
- Belgrade, MT
- Owner type
- Individual
- Serial number
- 15060221
- Year built
- 1964
- Type
- Fixed wing single engine
- Engine
- 4 cycle
- Airworthiness
- Experimental, exhibition
- Airworthiness date
- July 7, 2003
- Certificate issued
- November 5, 2001
- Expires
- January 31, 2029
- Mode S code
- A5059B
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 23
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1967 | 1 |
|---|---|
| 1968 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1977 | 1 |
| 1979 | 1 |
| 1981 | 1 |
| 1983 | 1 |
| 1987 | 3 |
| 1988 | 2 |
| 1990 | 1 |
| 1996 | 3 |
| 1997 | 1 |
| 2004 | 1 |
| 2008 | 1 |
| 2011 | 1 |
| 2022 | 1 |
| 2023 | 1 |
See all 25 ADs
Information bulletins that may apply · 8
Advisory, not mandatory.
Airframe · Cessna 150D
SAIB SW-18-31Navigation, Attitude, and Direction Data SystemSAIB CE-17-12Horizontal Stabilizer Elevator Attach PointsSAIB CE-16-03VERTICAL TAIL Aft Fin Attachment FittingSAIB CE-12-14Three Alternative Methods of Compliance for AD 2011-10-09SAIB CE-10-40R1Aircraft Fuel System; water contamination of fuel tank systems on Cessna single engine airplanesSAIB CE-09-42Lights - Landing Light, Beacon Light and Taxi Light Switch ApplicationsSAIB CE-09-01Equipment - EmergencySAIB CE-01-41R2Flight ControlsNTSB investigations
No NTSB investigations matched to N4221UMatched 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 Cessna 150D aircraft
FAA incident reports
No FAA accident or incident reports matched to N4221UMatched 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 Cessna 150D aircraft
Service difficulty reports
No reports matched to N4221UGeneral 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 Cessna 150D aircraft
STCs that may be installed · 304
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Cessna 150D
STC SA01233SEFabrication and installation of Alaskan Bushwheel LLC tail wheel and fork assemblySTC SA00709CHInstallation of replacement wing root vent described by Dwg Nos. 8-30-96-1& 8-30-96-2, no rev, both dtd 8/30/96, or later FAA app rev.STC SA02571SEInstallation of Garmin G500/G600 TXi Integrated Avionics System (Primary Flight Display, Multi-Function Display, and Engine Indicating System Display).