FAA · Supplemental Type Certificate
STC SA4180WE
Installation of inflatable door seal.
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 (27)
- 3A15 Textron Aviation Inc. · 35-33
- 3A15 Textron Aviation Inc. · 35-A33
- 3A15 Textron Aviation Inc. · 35-B33
- 3A15 Textron Aviation Inc. · 35-C33
- 3A15 Textron Aviation Inc. · 35-C33A
- 3A15 Textron Aviation Inc. · 36
- 3A15 Textron Aviation Inc. · A36
- 3A15 Textron Aviation Inc. · A36TC
- 3A15 Textron Aviation Inc. · B36TC
- 3A15 Textron Aviation Inc. · E33
- 3A15 Textron Aviation Inc. · E33A
- 3A15 Textron Aviation Inc. · E33C
- 3A15 Textron Aviation Inc. · F33
- 3A15 Textron Aviation Inc. · F33A
- 3A15 Textron Aviation Inc. · F33C
- 3A15 Textron Aviation Inc. · G33
- 3A15 Textron Aviation Inc. · G36
- 3A15 Textron Aviation Inc. · H35
- 3A15 Textron Aviation Inc. · J35
- 3A15 Textron Aviation Inc. · K35
- 3A15 Textron Aviation Inc. · M35
- 3A15 Textron Aviation Inc. · N35
- 3A15 Textron Aviation Inc. · P35
- 3A15 Textron Aviation Inc. · S35
- 3A15 Textron Aviation Inc. · V35
- 3A15 Textron Aviation Inc. · V35A
- 3A15 Textron Aviation Inc. · V35B
Certification basis — 14 CFR
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗