FAA · Supplemental Type Certificate
STC SH5690NM
Installation of Advanced Technology Aircraft Co. engine barrier filter.
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 (11)
- H13WE Bell Helicopter Textron · UH-1B
- H1RM Bell Helicopter Textron · UH-1B
- H1SW Bell Helicopter Textron · 204B
- H3NM Bell Helicopter Textron · UH-1B
- H3SO Bell Helicopter Textron · UH-1B
- H4NM Bell Helicopter Textron · UH-1E
- H5NM Bell Helicopter Textron · UH-1E
- H5SO Bell Helicopter Textron · UH-1B
- H7SO Bell Helicopter Textron · UH-1E
- H8NM Bell Helicopter Textron · UH-1E
- H9NM Bell Helicopter Textron · UH-1E
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
- § 21.25
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗