STC SH4507NM

Approval for takeoffs and landings up to and including 12,000 feet densiy altitude is authorized.

Current Issued Aircraft Rotorcraft Rev 09/22/1988 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 (6)

1H11 Sikorsky Aircraft Corporation · S-58BT
1H11 Sikorsky Aircraft Corporation · S-58DT
1H11 Sikorsky Aircraft Corporation · S-58ET
1H11 Sikorsky Aircraft Corporation · S-58FT
1H11 Sikorsky Aircraft Corporation · S-58HT
1H11 Sikorsky Aircraft Corporation · S-58JT

Certification basis — 14 CFR

Part 21

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.41
§ 21.47

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