STC ST00881WI-D

Modification of Collins TCAS II or TCAS 94 (TCAS II) system installation with Collins TTR-920 Change 6.04a Receiver Transmitter to a Collins TCAS II or TCAS 94 (TCAS II) system installation with Collins TTR-920 or Collins TTR-921 or Collins TTR-4000 Change 7.0 TCAS II Receiver Transmitter and optional TPR-901 in accordance with Collins Installation Instructions as listed on AML No. ST00881WI-D, Revision -, or later FAA approved revisions.

Historical Amended Aircraft Large Multi-Engine Rev 05/01/2008 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 (170)

+ 120 more aircraft

Certification basis — 14 CFR

Part 21

Specific sections

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