FAA · Supplemental Type Certificate
STC SH3744NM
Dual Battery Installation
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 (9)
- H3SO Richards Heavylift Helo Inc. · UH-1B
- H13WE Rotorcraft Development Corporation · UH-1B
- H3NM Rotorcraft Development Corporation · UH-1B
- R00012AT Red Tail Flying Services LLC · UH-1B
- H1RM WSH LLC · UH-1B
- H5SO International Helicopters Inc. · UH-1B
- H6SO Southwest Florida Aviation International · SW204 (UH-1B)
- H6SO Southwest Florida Aviation International · SW204HP (UH-1B)
- H7SO Overseas Aircraft Support Inc. · UH-1B
Certification basis — 14 CFR
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗