FAA · Supplemental Type Certificate
STC SA356CH
Installation of seaplane safety covers.
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 (50)
- A-759 American Champion Aircraft Corp. · 7GCBC
- A-759 American Champion Aircraft Corp. · 7ECA
- A21CE American Champion Aircraft Corp. · 8GCBC
- A-754 Arctic Aircraft Company Inc. · S-1B2
- 3A12 The Cessna Aircraft Company · 172M
- 3A12 The Cessna Aircraft Company · 172D
- 3A12 The Cessna Aircraft Company · 172P
- 3A12 The Cessna Aircraft Company · 172K
- 3A12 The Cessna Aircraft Company · 172I
- 3A12 The Cessna Aircraft Company · 172H (USAF T-41A)
- 3A12 The Cessna Aircraft Company · 172G
- 3A12 The Cessna Aircraft Company · 172E
- 3A12 The Cessna Aircraft Company · 172N
- 3A12 The Cessna Aircraft Company · 172C
- 3A12 The Cessna Aircraft Company · 172B
- 3A12 The Cessna Aircraft Company · 172F (USAF T-41A)
- 3A12 The Cessna Aircraft Company · 172L
- 3A17 The Cessna Aircraft Company · R172K
- 3A19 The Cessna Aircraft Company · 150K
- 3A19 The Cessna Aircraft Company · 150J
- 3A19 The Cessna Aircraft Company · 150H
- 3A19 The Cessna Aircraft Company · 150G
- 3A24 The Cessna Aircraft Company · A185F
- 3A24 The Cessna Aircraft Company · 185
- 5A6 The Cessna Aircraft Company · 180K
- 5A6 The Cessna Aircraft Company · 180J
- 5A6 The Cessna Aircraft Company · 180G
- 5A6 The Cessna Aircraft Company · 180H
- A-799 The Cessna Aircraft Company · 170B
- A-799 The Cessna Aircraft Company · 170A
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-5-235C
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-210T
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-220
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-210S
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-220C
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-5-220C
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-6-235
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-220T
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-5-210C
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-210
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-210C
- 3A23 Maule Aerospace Technology Inc. · Bee Dee M-4-220S
- 1A2 The New Piper Aircraft Inc. · PA-18S-\"125\"
- 1A2 The New Piper Aircraft Inc. · PA-18AS-\"150\"
- 1A2 The New Piper Aircraft Inc. · PA-18S-\"150\"
- 1A2 The New Piper Aircraft Inc. · PA-18S-\"135\"
- 1A4 The New Piper Aircraft Inc. · PA-20S-\"135\"
- 1A6 The New Piper Aircraft Inc. · PA-22S-135
- 2A13 The New Piper Aircraft Inc. · PA-28S-160
- 2A13 The New Piper Aircraft Inc. · PA-28S-180
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 ↗