STC SA00296BO

Installation of Avidyne Corporation Model DFC90 Autopilot, p/n 700-00170-000 or Model DFC100 Autopilot, p/n 700-00170-001, as a replacement for the S-TEC System 55X Autopilot, p/n 1192-( )-( ), in accordance with the Avidyne Corporation Master Document List, Document AVDFC-019, Rev 06, dated February 23, 2011, or later FAA-approved revisions.

Historical Amended Aircraft Single-Engine Rev 12/12/2011 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 (2)

Certification basis — 14 CFR

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47
§ 21.101
§ 21.115

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