FAA · Supplemental Type Certificate
STC SA131GL
Installation of Eastern Aircraft Corp. fuel quantity indicating system.
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 (22)
- ATC 560 Beech Aircraft Corporation · B17B
- ATC 560 Beech Aircraft Corporation · SB17L
- ATC 560 Beech Aircraft Corporation · B17L
- ATC 579 Beech Aircraft Corporation · B17R (Army UC-43H)
- ATC 602 Beech Aircraft Corporation · SC17L
- ATC 602 Beech Aircraft Corporation · C17L (Army UC-43J)
- ATC 602 Beech Aircraft Corporation · C17B (Army UC-43G)
- ATC 604 Beech Aircraft Corporation · SC17R
- ATC 604 Beech Aircraft Corporation · C17R (Army UC-43E)
- 638 Raytheon Aircraft Company · D17R (Army UC-43A)
- 641 Raytheon Aircraft Company · E17B (Army UC-43D)
- 641 Raytheon Aircraft Company · SE17B
- 641 Raytheon Aircraft Company · E17L
- 689 Raytheon Aircraft Company · SF-17D
- 689 Raytheon Aircraft Company · F17D (Army UC-43C)
- 713 Raytheon Aircraft Company · D17A (Army UC-43F)
- 779 Raytheon Aircraft Company · G17S
- A-649 Raytheon Aircraft Company · D17S (Army UC-43)
- A-649 Raytheon Aircraft Company · D17S (Army UC-43B)
- A-649 Raytheon Aircraft Company · D17S (Navy GB-2)
- A-649 Raytheon Aircraft Company · SD17S
- A-649 Raytheon Aircraft Company · D17S (Navy GB-1)
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 ↗