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Atlas / STC / SR00252LA

FAA · Supplemental Type Certificate

STC SR00252LA

Installation of a Lycoming T53-L-13BA engine in a Western Int'l Aviation, Inc. helicopter. Limited to installation on UH-1P, S/N 63-13163 ONLY.

Current Amended Aircraft Rotorcraft Rev 05/01/2003 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 ↗