FAA · Supplemental Type Certificate
STC ST09181AC
Installation of main landing gear spotlights
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 (18)
- A6WE The Boeing Company · DC-9-11
- A6WE The Boeing Company · DC-9-12
- A6WE The Boeing Company · DC-9-13
- A6WE The Boeing Company · DC-9-14
- A6WE The Boeing Company · DC-9-15
- A6WE The Boeing Company · DC-9-15F
- A6WE The Boeing Company · DC-9-21
- A6WE The Boeing Company · DC-9-31
- A6WE The Boeing Company · DC-9-32
- A6WE The Boeing Company · DC-9-32 (VC-9C)
- A6WE The Boeing Company · DC-9-32F
- A6WE The Boeing Company · DC-9-32F (C-9A)
- A6WE The Boeing Company · DC-9-32F (C-9B)
- A6WE The Boeing Company · DC-9-33F
- A6WE The Boeing Company · DC-9-34
- A6WE The Boeing Company · DC-9-34F
- A6WE The Boeing Company · MD-88
- A6WE The Boeing Company · MD-90-30
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗