FAA · Supplemental Type Certificate
STC SR09478RC
Installation of Cockpit Infrared Filter System in accordance with Ahlers Aerospace Master Drawing List 407-01, (E99-80) Rev. D, dated May 11, 2007, or later FAA approved revision. Rotorcraft Flight Manual Supplement, RFMS, Cockpit Infrared Filter System For Bell Helicopter Model 407, Revision IR, dated May 11, 2007, or Rotorcraft Flight Manual Supplement, RFMS (E99-269), Cockpit Infrared Filter System For Bell Helicopter Model 407, Revision IR, dated June 08, 2011, or later FAA approved revision is required. Instructions for Continued Airworthiness Document Number E99-79, Revision B, or later revision is required for this installation.
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
- 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 ↗