FAA · Supplemental Type Certificate
STC SR01210NY
Extension of main rotor blade, P/N 61170-20201 series. For model S-61A, serial numbers 61-063, 61-147, 61-232, 61-272; for model S-61N, 61-216, 61-220, 61-242, 61-744; for model S-61R, 61-551.
What is an STC?
A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.
Applicable aircraft (6)
- 1H15 Sikorsky Aircraft Corporation · S-61R (USAF CH-3E)
- 1H15 Sikorsky Aircraft Corporation · S-61R (USAF CH-3C)
- 1H15 Sikorsky Aircraft Corporation · S-61N
- H2EA Sikorsky Aircraft Corporation · S-61A (U.S. Navy HSS-2)
- H2EA Sikorsky Aircraft Corporation · S-61A (USAF CH-3B)
- H2EA Sikorsky Aircraft Corporation · S-61A (U.S. Navy SH-3A)
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗