FAA · Supplemental Type Certificate
STC SE00429AT
Incorporate an alternate gear box stud installation.
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 (7)
- E2EA Pratt & Whitney Division · Turbo Wasp JT8D-1
- E2EA Pratt & Whitney Division · Turbo Wasp JT8D-17AR
- E9NE Pratt & Whitney Division · JT8D-209
- E9NE Pratt & Whitney Division · JT8D-217
- E9NE Pratt & Whitney Division · JT8D-217A
- E9NE Pratt & Whitney Division · JT8D-217C
- E9NE Pratt & Whitney Division · JT8D-219
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
- § 21.47
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗