Skip to content

Atlas / STC / SA3A23NM

FAA · Supplemental Type Certificate

STC SA3A23NM

Installation of Schneider wheel skis, 6-inch to 10-inch aluminum wheel adapters and 29 x11.0-10 8-ply minimum tires on main landing gear.

Current Issued Aircraft Single-Engine Rev 12/10/1982 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 (3)

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 ↗