FAA · Supplemental Type Certificate
STC SA2091WE
Installation of air conditioning system
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 (11)
- A7CE Cessna Aircraft Company · 401
- A7CE Cessna Aircraft Company · 401A
- A7CE Cessna Aircraft Company · 402
- A7CE Cessna Aircraft Company · 402A
- A7CE Cessna Aircraft Company · 402B
- A7CE Cessna Aircraft Company · 411
- A7CE Cessna Aircraft Company · 411A
- A7CE Cessna Aircraft Company · 414
- A7CE Cessna Aircraft Company · 421
- A7CE Cessna Aircraft Company · 421A
- A7CE Cessna Aircraft Company · 421B
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗