FAA · Supplemental Type Certificate
STC SH437NW
Installation of an electronic weighing system (for monitoring cargo weight)
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 (7)
- 7H1 Eurocopter France · SA 318C-Alouette Astazou
- H1IN Eurocopter France · SA.315B Alouette III
- H1IN Eurocopter France · SA.316B Alouette III
- H1IN Eurocopter France · SA.316C Alouette III
- H1IN Eurocopter France · SA.319B Alouette III
- 7H1 Eurocopter France · SE 313B-Alouette II
- H1IN Eurocopter France · SE.3160 Alouette III
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 ↗