Sikorsky S-55
15 on the U.S. register across 3 versions the FAA records separately. Built from 1952 to 1959; half of them date from 1955 or earlier. Kentucky has the most (9). 67% are registered to companies, flight schools, clubs and other organisations; the rest to individuals, who are never named here.
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About the S-55 from the FAA's model table
- Type
- Rotorcraft · Helicopters
- Power
- Turboshaft, 1 engine
- Common engines
- Wright C7Ba Series (4), Airesearch Tse331 Series (3), Wright R-1300 Ser (2)
- Seats
- 12
- Cruise speed
- about 71 mph
- Maker on the register
- Sikorsky
- Registered
- earliest certificate November 7, 2011; newest November 30, 2022
Where they are owner's state
Who owns them registrant type
Versions as the FAA records them · click one to list only those aircraft
When they were built by decade · 2 with no year on file
Registrations by year certificates issued since 2010, including changes of owner · 2026 is the year so far
Registration status
Airworthiness certificate class
Biggest operators companies, schools and clubs
Fleet pages: Sierra Aeronautics LLC
Accident history NTSB records · 15 cases since 1982, 2 fatal
The 8 most recent of 15 cases where the NTSB's make and model match this family's versions. Rates per registered aircraft, phases of flight and causes are coming with the analytics stage. Each aircraft's own page also shows its record.
Questions people ask answers refresh every morning
How many Sikorsky S-55 aircraft are registered in the U.S.?
15 as of October 2, 2026, counting 3 versions the FAA records separately.
Which state has the most Sikorsky S-55s?
Kentucky, with 9.
Who owns the Sikorsky S-55?
67% are registered to companies, flight schools, clubs and other organisations; the rest to individuals and co-owners, who are never named on this site.
Aircraft newest certificates first · 3 S55B (all versions)
| Tail no. | Maker and model | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|
| N1255T | Sikorsky S55B |
Sierra Aeronautics LLC Franklin, Kentucky |
Standard | 2021-09-21 | Valid |
| N616Z | Sikorsky S55B |
Sierra Aeronautics LLC Franklin, Kentucky |
None on file | 2021-09-21 | Valid |
| N855TC | Sikorsky S55B |
Sierra Aeronautics LLC Franklin, Kentucky |
Standard | 2021-09-21 | Valid |