- Registered owner
- Knutson Flying Service Inc
- Location
- Tioga, ND
- Owner type
- Corporation
- Serial number
- 947
- Year built
- 1957
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Standard, normal
- Airworthiness date
- June 25, 1975
- Certificate issued
- September 29, 1978
- Expires
- May 31, 2028
- Mode S code
- A5C487
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 42
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1966 | 1 |
|---|---|
| 1967 | 1 |
| 1969 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 3 |
| 1975 | 1 |
| 1977 | 2 |
| 1978 | 5 |
| 1979 | 1 |
| 1980 | 3 |
| 1981 | 5 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 1 |
| 1986 | 2 |
| 1991 | 1 |
| 1997 | 2 |
| 2001 | 1 |
| 2012 | 1 |
| 2024 | 1 |
| 2026 | 1 |
See all 45 ADs
Information bulletins that may apply · 2
Advisory, not mandatory.
NTSB investigations
No NTSB investigations matched to N47077Matched 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 Hiller UH-12D aircraft
FAA incident reports
No FAA accident or incident reports matched to N47077Matched 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 Hiller UH-12D aircraft
Service difficulty reports
No reports matched to N47077General 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 Hiller UH-12D aircraft
STCs that may be installed · 53
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.