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Type certificates · aircraft · rotorcraft · current

Type certificate 1H4

Held today by Centerpointe Aerospace INC., earlier by Sikorsky Aircraft Corporation\California Helicopter Airways INC.. It covers 3 models. Last revised September 19, 2019 (revision 34). 31 approved modifications build on it.

Models under this certificate 3

S-55C, S-55, S-55B

The data sheet on the FAA's site: the approved engines and propellers, weights, speeds and limits for each model.

FAA orders on these designs 0 · newest first

None in the current files.

Approved modifications 31 · companies holding the most

Orlando Heli Airways INC 4Whisper Jet, INC. 2Whisper Jet INC. 2Precise Flight INC 2Onboard Systems 2Electronics International INC. 2Electronics International 2Airwolf Filter Corporation 2

Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/1H4.json.