STC SA812NW

Modification consists of moving the mounting of the roll-servo from fuselage station 71.0 to 180.5 and moving the mounting of the pitch servo from station 85.40 to station 233

Current Issued Aircraft Small Airplane Rev 07/25/1979 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 (1)

6A1 Twin Commander Aircraft LLC · 500-B

Certification basis — 14 CFR

Part 21

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 ↗