FAA · Supplemental Type Certificate
STC ST02316CH
Upgrade of existing Mode S transponder installation to add enhanced surveillance Mode S
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 (7)
- A6WE McDonnell Douglas Corporation · DC-9-81
- A6WE McDonnell Douglas Corporation · DC-9-82
- A6WE McDonnell Douglas Corporation · DC-9-82 (MD-82)
- A6WE McDonnell Douglas Corporation · DC-9-83
- A6WE McDonnell Douglas Corporation · DC-9-87
- A6WE McDonnell Douglas Corporation · MD-88
- A6WE McDonnell Douglas Corporation · MD-90-30
Certification basis — 14 CFR
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗