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Atlas / STC / SA3322NM

FAA · Supplemental Type Certificate

STC SA3322NM

Installation of the Soloy turbine pac (Allison 250-C20S engine).

Historical Reissued Aircraft Single-Engine Rev 12/02/2004 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 (4)

Certification basis — 14 CFR

Specific sections

  • § 21.47
  • Sec. 23.45
  • Sec. 23.49
  • Sec. 23.629
  • Sec. 23.1559

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