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Atlas / STC / SA8501SW-D

FAA · Supplemental Type Certificate

STC SA8501SW-D

Installation of a Century Automatic Flight System, Model AK1018 consisting of a Century 2010/2030/2031/2050/2051/30300/30301/30310/30320/30321/30330/30331/30500/30501/30510/30511/30520/30521/30530/30531/40300/40301/40310/40311/40320/40321/40330/40331 Autopilot.

Current Amended Aircraft Small Airplane Rev 12/20/2012 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 ↗