FAA · Supplemental Type Certificate
STC ST01391LA
Installation of a reinforced cockpit door.
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 (8)
- A22WE The Boeing Company · DC-10-10
- A22WE The Boeing Company · MD-11F
- A22WE McDonnell Douglas Corporation · DC-10-10F
- A22WE McDonnell Douglas Corporation · DC-10-30
- A22WE McDonnell Douglas Corporation · DC-10-30F
- A22WE McDonnell Douglas Corporation · DC-10-40
- A22WE McDonnell Douglas Corporation · MD-10-30F
- A22WE McDonnell Douglas Corporation · MD-11
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗