STC SR09421RC

Installation of Aerospace Filtration Systems (AFS) Engine Inlet Barrier Filter (IBF) System in accordance with AFS Drawing Number 106000, Revision B, dated June 17, 2004, or later FAA approved revision and installation procedures AFS-BH206L3L4-IBF-KIT-IP, Initial Release dated August 16, 2004, or later FAA approved revision.

Historical Amended Aircraft Rotorcraft Rev 09/23/2005 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 (3)

Certification basis — 14 CFR

Specific sections

Sec. 111
Sec. 113
Sec. 115
Sec. 117
Sec. 119
Sec. 120
§ 21.47

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