FAA · Supplemental Type Certificate
STC SE00057AT
Installation of 'Pc safety valve kit' P/N 250-956-100.
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)
- E1GL Allison Engine Company Inc. · 250-C30S
- E1GL Allison Engine Company Inc. · 250-C30R
- E1GL Allison Engine Company Inc. · 250-C30P
- E1GL Allison Engine Company Inc. · 250-C30L
- E1GL Allison Engine Company Inc. · 250-C30M
- E1GL Allison Engine Company Inc. · 250-C30G
- E1GL Allison Engine Company Inc. · 250-C30
- E1GL Allison Engine Company Inc. · 250-C28C
- E1GL Allison Engine Company Inc. · 250-C28B
- E1GL Allison Engine Company Inc. · 250-C28
- E1GL Allison Engine Company Inc. · 250-C30U
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 ↗