STC SE00003EN

Instructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals.

Current Reissued Engine Rev 10/04/2022 View PDF on drs.faa.gov ↗

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 (4)

E4EA Pratt & Whitney Canada, Inc. · PT6A-20
E4EA Pratt & Whitney Canada, Inc. · PT6A-20A
E4EA Pratt & Whitney Canada, Inc. · PT6A-20B
E4EA Pratt & Whitney Canada, Inc. · PT6A-6/C20

Certification basis — 14 CFR

Part 21
Part 33

Specific sections

§ 21.47
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 ↗