Skip to content

Atlas / STC / SA684GL

FAA · Supplemental Type Certificate

STC SA684GL

To convert a Cleveland nose wheel from Model 40-87 to Model 40-87F, install Parker Hannifin 199-121 conversion kit.

Current Reissued Aircraft Small Airplane Rev 09/19/2022 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 (7)

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