FAA · Supplemental Type Certificate
STC SE8409SW
Installation of P/N CO-300-1 Oil Filter Adaptor with spin-on filter as a replacement for the existing oil screen
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 (10)
- E-236 Continental Motors · C-125-1
- E-236 Continental Motors · C-125-2
- E-253 Continental Motors · C145-2
- E-253 Continental Motors · C145-2H
- E-253 Continental Motors · C145-2HP
- E-253 Continental Motors · O-300-A
- E-253 Continental Motors · O-300-B
- E-253 Continental Motors · O-300-C
- E-253 Continental Motors · O-300-D
- E-253 Continental Motors · O-300-E
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 ↗