FAA · Supplemental Type Certificate
STC SR00143DE
Installation of an upgraded 42 degree Tail Rotor gearbox, P/N 212-040-003
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)
- R00007DE Arrow Falcon Exporters Inc. · UH-1H
- H2NM California Department of Forestry · UH-1F
- R00002RC Global Helicopter Technology Inc. · UH-1H
- H15NM Hagglund Helicopters LLC · UH-1H
- R00005SE Northwest Rotorcraft LLC · UH-1H
- H7SO Overseas Aircraft Support Inc · UH-1H
- H13WE Rotorcraft Development Corporation · UH-1H
- H6SO Southwest Florida Aviation International · UH-1H
- H7NE Tamarack Helicopters Inc. · UH-1F
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗