FAA · Supplemental Type Certificate
STC SR00059MC-D
Installation of US Army National Guard Security and Support Battalion Sierra Nevada Corporation Analog/Digital Data Downlink "B Kit" in accordance with American Eurocopter Corporation Drawing List 145A82-8020 Rev G dtd 06/14/11 and FR,S 145FMS-502 Rev A dtd 07/15/2011. or later ODA approved revision, and Instructions for Continued Airworthiness 145MMS-018 Rev B dtd 06/16/11, or later FAA-AEG accepted revision.
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)
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗