STC SH2720SO

Installation of Aero Aire Model 234 Environmental Control System (ECS) in accordance with Aero Aire Master Drawing List Document No. A234R002, Revision B, dated March 7, 1990, or later FAA Approved Revision.

Current Reissued Aircraft Rotorcraft Rev 06/20/2003 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 (1)

H9EA Boeing Defense & Space Group · 234

Certification basis — 14 CFR

Part 21

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120

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