STC ST04368CH

Installation of a dual Universal Avionics Systems Corporation AHS-525 Attitude and Heading Reference System (AHRS) in accordance with Pentastar Aviation Master Data List, Document No. A-16738-001, Rev. A, dated December 19, 2018, or later FAA approved revision.

Current Issued Aircraft Rev 12/19/2018 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 (1)

A12EA Gulfstream Aerospace Corporation · G-1159B

Certification basis — 14 CFR

Specific sections

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

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