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Atlas / STC / SA09241SC

FAA · Supplemental Type Certificate

STC SA09241SC

Installation of single TRA-3500 radar altimeter using TRI 40 indicator and the installation of TM-23 marker beacon receiver using MLC28-5 voltage converter.

Current Reissued Aircraft Single-Engine Rev 12/21/2001 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
  • § 21.47

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