FAA · Supplemental Type Certificate
STC ST02257AK
Modify the aircraft configuration from 23 passenger seats to a combined cargo and passenger configuration. Limit the maximum passenger seating capacity to 19 or less in the combined configuration. Install equipment including: fire containment covers, cargo nets, smoke detectors, fire extinguishers, placards, and emergency equipment.
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)
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗