- Registered owner
- Sierra Aeronautics LLC
- Location
- Franklin, KY
- Owner type
- LLC
- Serial number
- 55607
- Year built
- 1954
- Type
- Rotorcraft
- Engine
- Reciprocating
- Airworthiness
- Standard, normal
- Airworthiness date
- March 19, 1975
- Certificate issued
- September 21, 2021
- Expires
- September 30, 2028
- Mode S code
- A0695E
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every AiResearch TSE331 model are included below.
On this page
Airworthiness directives that may apply · 32
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1963 | 1 |
|---|---|
| 1965 | 1 |
| 1967 | 2 |
| 1970 | 1 |
| 1973 | 2 |
| 1975 | 2 |
| 1976 | 1 |
| 1980 | 1 |
| 1989 | 1 |
| 1993 | 2 |
| 1994 | 1 |
| 1995 | 1 |
| 1998 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2006 | 1 |
| 2016 | 1 |
| 2018 | 1 |
| 2021 | 1 |
| 2023 | 1 |
Airframe · Sikorsky S55B
AD 2023-11-07Ground Proximity SystemAD 66-04-03Main Rotor BladesAD 75-22-12Inflight Power LossInformation bulletins that may apply · 1
Advisory, not mandatory.
Engine · AiResearch TSE331 series
SAIB NE-06-69NTSB investigations · 1
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports
No reports matched to N1255TGeneral 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 Sikorsky S55B aircraft
STCs that may be installed · 19
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
See all 19 STCs