STC ST04254CH

Installation of Datalink Communications System supporting Air Traffic Services (ATS) using Universal Avionics UL-801 Unilink System, Dual UNS-1(-)W Flight Management Systems and upgrade to CVR 120A for data link recording

Historical Issued Aircraft Large Airplane Rev 10/06/2017 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)

A16WE The Boeing Company · 737-200 Series

Certification basis — 14 CFR

Part 14
Part 21
Part 25
Part 26
Part 115

Specific sections

§ 21.47
§ 26.11
§ 21.101
§ 21.111
§ 21.113
§ 21.115
§ 21.117
§ 21.119
§ 21.120
§ 25.301

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