TCDS H4NM
Historical · Aircraft · Rotorcraft · Rev 9 (12/01/1997) · FAA TCDS database
US Helicopter Inc. drs.faa.gov ↗
The TCDS PDF on drs.faa.gov is authoritative for design-as-certified weight limits, performance, equipment and operating limitations.
Models covered (3)
SAIBs (2)
Certification basis — 14 CFR
Specific sections
- Sec. 36.1
- Sec. 133.1
- Sec. 137.3
- Sec. 21.25
- Sec. 29.15
- Sec. 91.313
- Sec. 29.1529
Former holders
- Williams Helicopter\UNC Helicopter, Inc.
- Williams Helicopter\UNC Helicopter
- Williams Helicopter\UNC Helicopter, Inc.\US Helicopter, Inc.
- Williams Helicopter\UNC Helicopter\US Helicopter, Inc.
Fleet view · 7 registered tails · FAA registry, median and p10–p90
- Seats
- 6
- n=7
- Horsepower
- 1,150
- 1,100–1,150
- Year of mfr
- 1967
- 1965–1988
Engines on the type, by tail count
- LYCOMING T-53 SERIES 3
- LYCOMING T-53 1
- LYCOMING T53-L-11D 1
- NONE NONE 1
- NTSB events
- 1
- across all model variants
- Applicable ADs
- 85
- FAA airworthiness directives
- Per-tail rate
- 0.14 events / tail · 12.14 ADs / tail