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Atlas / STC / SA3788NM

FAA · Supplemental Type Certificate

STC SA3788NM

Installation of Sensenich 74DM65S propeller, Elano Exhaust System, P/N EL 099001-063 and -060; and Cessna muffler, P/N 0454011-1, per FAA Approved ACT Report No. 104, dated February 10, 1992, or later FAA approved revisions. STC SA4795SW for the installation of Lycoming O-320-E2D engine is required as part of this installation.

Historical Amended Aircraft Single-Engine Rev 05/05/1992 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.

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 ↗