STC SR00427SE

Fabrication and installation of a Helipro Model H9661N01-01, -03, -05, -07, -51, -53, -55, -57, -59 or -61 logging utility system (S-61N Transport Category ONLY)

Historical Amended Aircraft Rotorcraft Rev 12/04/1998 View PDF on drs.faa.gov ↗

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 (1)

1H15 Sikorsky Aircraft Corporation · S-61N

Certification basis — 14 CFR

Part 21

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗