STC SH1461CE

Installation of a Nite Sign Model H47B-1 Electronic Aireal Billboard.\nDATA REQUIRED:\n(1)\tNite Sign Drawing A1B, N/C dated November 18, 1978, or later "FAA Approved" revision.\n(2)\tFAA Approved Rotorcraft Flight Manual Supplement to Enstrom Helicopter Model F-28C/280 dated December 1, 1978, or later "FAA Approved" revision.

Historical Reissued Aircraft Rotorcraft Rev 09/30/2003 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)

H1CE The Enstrom Helicopter Corporation · F-28C
H1CE The Enstrom Helicopter Corporation · 280C

Certification basis — 14 CFR

Part 21

Specific sections

§ 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 ↗