FAA · Supplemental Type Certificate
STC SR01855LA
Installation of Apical Industries, Inc. Emergency Float Kit in accordance with Apical Industries, Inc., Master Document List MD135-1, Revision A, dated December 19, 2005, or later FAA approved revision. Rotorcraft Flight Manual Supplement, RFMS 135-1, Revision N/C, FAA approved on January 4, 2006, or later FAA approved revision is required as part of this modification.
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)
Certification basis — 14 CFR
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 ↗