FAA · Supplemental Type Certificate
STC SR01470SE
Fabrication and Installation of Boundary Layer Research (BLR) Fast Fin 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 (9)
- R00007DE Arrow Falcon Exporters Inc. · UH-1H
- R00005SE Northwest Rotorcraft LLC · UH-1H
- H12NM Garlick Helicopters Inc. · UH-1F
- H13WE Garlick Helicopters Inc. · UH-1H
- H15NM Hagglund Helicopters LLC · UH-1H
- H7SO Williams Helicopter Corporation · UH-1H
- H3SO US Helicopter Inc. · UH-1H
- H7NE Tamarack Helicopters Inc. · UH-1F
- H11SW AST Inc. · UH-1F
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
- § 21.25
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗