- Registered owner
- Mid Atlantic Air Museum
- Location
- Reading, PA
- Owner type
- Corporation
- Serial number
- HM-174
- Type
- Rotorcraft
- Engine
- Reciprocating
- Airworthiness
- Experimental, amateur built
- Airworthiness date
- May 11, 1989
- Certificate issued
- March 5, 2024
- Expires
- March 31, 2031
- Mode S code
- A128C4
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Continental 0-200 model are included below.
On this page
Airworthiness directives that may apply · 14
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1969 | 1 |
|---|---|
| 1980 | 1 |
| 1981 | 2 |
| 1993 | 4 |
| 1995 | 1 |
| 1996 | 3 |
| 1998 | 2 |
Engine · Continental 0-200 series
AD 98-17-11CrankshaftsAD 98-01-06CarburetorsAD 96-12-22Full Flow Engine Oil AdapterInformation bulletins that may apply · 7
Advisory, not mandatory.
NTSB investigations
No NTSB investigations matched to N174HMMatched 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 Merkel Howard H J4B-2 aircraft
FAA incident reports
No FAA accident or incident reports matched to N174HMMatched 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 Merkel Howard H J4B-2 aircraft
Service difficulty reports
No reports matched to N174HMGeneral 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 Merkel Howard H J4B-2 aircraft
STCs that may be installed · 51
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Engine · Continental 0-200 series
STC SE04651CHTo allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22STC SE2932SWInstall carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive.STC SE208SOInstallation of ice indicator in the carburetor.