FAA · Supplemental Type Certificate
STC SA1050NW
The installation of 3 aux fuel tank sys consisting of 8 cylindrical fuel tanks. The forward aux tank sys of 600 gals and a mid-aux tank sys of 600 gals are located in the forward cargo compartment and a similar aft aux tank sys of 400 gals located in the aft cargo compartment.
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 (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 ↗