- Registered owner
- Muehlberg Stephen E
- Location
- Newcastle, OK
- Owner type
- Individual
- Serial number
- 75-10404
- Year built
- 2025
- Type
- Fixed wing single engine
- Engine
- Reciprocating
- Airworthiness
- Experimental, amateur built
- Airworthiness date
- September 2, 2025
- Certificate issued
- May 16, 2022
- Expires
- May 31, 2029
- Mode S code
- A4BDBC
- Kit
- Zenith Aircraft Co CH750
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 15
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1969 | 2 |
|---|---|
| 1977 | 1 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1991 | 1 |
| 1993 | 1 |
| 1996 | 2 |
| 1998 | 2 |
| 2004 | 1 |
| 2012 | 1 |
| 2024 | 1 |
| 2026 | 2 |
See all 17 ADs
Information bulletins that may apply · 3
Advisory, not mandatory.
NTSB investigations
No NTSB investigations matched to N404ZMatched 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 Muehlberg Stephen E ZENITH STOL CH 750 aircraft
FAA incident reports
No FAA accident or incident reports matched to N404ZMatched 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 Muehlberg Stephen E ZENITH STOL CH 750 aircraft
Service difficulty reports
No reports matched to N404ZGeneral 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 Muehlberg Stephen E ZENITH STOL CH 750 aircraft
STCs that may be installed · 32
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Engine · Lycoming O-235-C1
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.
Earlier aircraft with this N-number · 1
This aircraft carried N404Z before the one registered now. The FAA can assign a mark to another aircraft once a registration is cancelled.