STC ST00831WI

Installation of the Sigma Tek 1U619-( ) VHF COM/NAV/ATC Radio Control Panel with Collins VHF 22(C/D) radios to provide 25kHz and 8.33 kHz channel spacing in Cessna Airplanes listed on the attached FAA Approved Model List (AML) No. ST00831WI, dated November 4, 1999, in accordance with Cessna Aircraft Company, Master Document List No. CF90055, Revision B, dated October 21, 1999 or later FAA approved revision.

Current Reissued Aircraft Small Multi-Engine Rev 03/09/2018 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 (4)

Certification basis — 14 CFR

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47
§ 21.120

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