N31611 - 1956 Sikorsky S-55B Aircraft Registration

S55P

1956 SIKORSKY S-55B

Aircraft Description

N31611 is a 1956 Sikorsky S-55B, a single-engine turbo-shaft aircraft registered to Sierra Aeronautics LLC in Franklin, KY. This aircraft holds a restricted airworthiness certificate issued by the Federal Aviation Administration on June 7, 1973. The registration certificate was issued on September 21, 2021. The registration is set to expire on September 30, 2028. Powered by a Wright C7BA SERIES engine producing 800 horsepower, N31611 is. The aircraft's Mode S transponder code is A35FB0 (hex), used for ADS-B identification and flight tracking. The FAA registry record for N31611 was last updated on June 10, 2023. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

Sikorsky Aircraft, a Lockheed Martin company based in Stratford, Connecticut, manufactures military and commercial helicopters. Known for the UH-60 Black Hawk and S-76 series, Sikorsky has been a leading rotorcraft manufacturer since 1923. AviatorDB tracks 843 Sikorsky aircraft currently registered in the FAA database, including the S-55B model.

AviatorDB has found no NTSB accident or incident reports involving N31611. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
1956
Manufacturer
SIKORSKY
Model
S-55B
Type Aircraft
Rotorcraft
ICAO Type Code
S55PS-55
Cruise Speed
71 mph
Weight Class
Up to 12,500 lbs
Airworthiness Date
June 7, 1973
Classification
Restricted 1 Category
Type Registration
LLC
Status
Valid Registration
Cert Issue Date
September 21, 2021

Registered Owner

Name
SIERRA AERONAUTICS LLC
Address
40 SULPHUR SPRING CHURCH RD
City
FRANKLIN
State / Zip Code
Kentucky42134-8569
Country
United States

Powerplant & Avionics

Engine Type
Turbo-shaft
Number of Engines
1
Engine Manufacturer
WRIGHT
Engine Model
C7BA SERIES
Horsepower
800 HP
Mode S Code (Oct)
50657660
Mode S Code (Hex)
A35FB0

Additional Details

Registration
N31611
Serial Number
56-4255
Number of Engines
1
Number of Seats
12
Expiration Date
September 30, 2028
Last Action Date
June 10, 2023
Last Update Date
January 19, 2026
Unique ID
00061613

Data Source

Data provided by the US Federal Aviation Administration. View on FAA.gov

Last updated: 2026-06-15 01:32:20 UTC