FAA · Supplemental Type Certificate
STC SA2927NM
Installation of an AiResearch TE-0667 turbocharger on a Continental IO-520-D engine with McCauley D2A34C two-bladed propeller or Hartzell HC-C3YF-1RF/F9587C-15 three-bladed propeller. (A188B RESTRICTED)
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
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗