Type certificate HR1SO
Held today by Orlando Helicopter Airways INC.. It covers 10 models; about 7 aircraft on the U.S. register are built to it. Last revised August 13, 2003 (revision 11). 1 FAA order name its designs, and 17 approved modifications build on it.
Models under this certificate 10
UH-19C, CH-19E, H-19A, HRS-3/H-19B, UH-19D, H-19G, UH-19F, H-19D, YH-19A, HRS-1/CH-19
On this site
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 1 · newest first
1975-02-1975-04-02 · Main Rotor Spindles · rotorcraft systems
Approved modifications 17 · companies holding the most
Source: FAA type certificate data sheets (Dynamic Regulatory System); register counts from the FAA register of October 5, 2026. Connections as data: /graph/certificate/HR1SO.json.