FAA · Supplemental Type Certificate
STC SA02233AK
Installation of high visibility fuel sight gauge.
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 (25)
- A-780 FS 2003 Corp. · PA-12
- A-780 FS 2003 Corp. · PA-12S
- 1A2 Piper Aircraft Inc. · PA-18
- 1A2 Piper Aircraft Inc. · PA-18-105 (Special)
- 1A2 Piper Aircraft Inc. · PA-18-125 (Army L-21A)
- 1A2 Piper Aircraft Inc. · PA-18-135
- 1A2 Piper Aircraft Inc. · PA-18-150
- 1A2 Piper Aircraft Inc. · PA-18A
- 1A2 Piper Aircraft Inc. · PA-18A-135
- 1A2 Piper Aircraft Inc. · PA-18A-150
- 1A2 Piper Aircraft Inc. · PA-18AS-125
- 1A2 Piper Aircraft Inc. · PA-18AS-135
- 1A2 Piper Aircraft Inc. · PA-18AS-150
- 1A2 Piper Aircraft Inc. · PA-18S
- 1A2 Piper Aircraft Inc. · PA-18S-105 (Special)
- 1A2 Piper Aircraft Inc. · PA-18S-125
- 1A2 Piper Aircraft Inc. · PA-18S-135
- 1A2 Piper Aircraft Inc. · PA-18S-150
- 1A2 Piper Aircraft Inc. · PA-19 (Army L-18C)
- 1A2 Piper Aircraft Inc. · PA-19S
- A-691 Piper Aircraft Inc. · PA-11
- A-691 Piper Aircraft Inc. · PA-11S
- AR-7 Piper Aircraft Inc. · PA-18A-135 (Restricted)
- AR-7 Piper Aircraft Inc. · PA-18A-150 (Restricted)
- AR-7 Piper Aircraft Inc. · PA-18A (Restricted)
Certification basis — 14 CFR
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 ↗