FAA · Supplemental Type Certificate
STC SE435NE
Installation of an oil tank filler opening shuttle valve.
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 (13)
- E20EA Pratt & Whitney Division · JT9D-7H
- E20EA Pratt & Whitney Division · JT9D-20J
- E20EA Pratt & Whitney Division · JT9D-7J
- E20EA Pratt & Whitney Division · JT9D-7
- E20EA Pratt & Whitney Division · JT9D-7F
- E20EA Pratt & Whitney Division · JT9D-7AH
- E20EA Pratt & Whitney Division · JT9D-7A
- E20EA Pratt & Whitney Division · JT9D-3A
- E3NE Pratt & Whitney Division · JT9D-7Q
- E3NE Pratt & Whitney Division · JT9D-7R4D
- E3NE Pratt & Whitney Division · JT9D-70A
- E3NE Pratt & Whitney Division · JT9D-59A
- E3NE Pratt & Whitney Division · JT9D-7Q3
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗