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Atlas / STC / SH3785NM

FAA · Supplemental Type Certificate

STC SH3785NM

An approval of increased take off and landing density altitude limits for hover in ground effect(H.O.G.E.) and hover out of ground effect (H.O.G.E.) at reduced gross weights. (S-62A amphibious transport helicopter)

Current Issued Aircraft Rotorcraft Rev 04/19/1988 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 (1)

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 ↗