STC SR04200AT

Installation of a Sky Sign Model H-47C Electronic Billboard in Robinson R44/ R44 II series rotorcraft

Historical Issued Aircraft Rotorcraft Rev 02/19/2015 View PDF on drs.faa.gov ↗

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 (2)

H11NM Robinson Helicopter Company · R44
H11NM Robinson Helicopter Company · R44 II

Certification basis — 14 CFR

Part 21
Part 27

Specific sections

§ 21.47
§ 21.101
§ 21.111
§ 21.113
§ 21.115
§ 21.117
§ 21.119
§ 21.120

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗