STC SA04559NY

Installation of Single or Dual Sandel SN4500 Primary Navigation Display(s) (EHSI) with optional SA4550\nprimary attitude display(s) (EADI)

Current Issued Aircraft Small Airplane Rev 11/09/2020 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 (3)

A9EA Viking Air Limited · DHC-6-100
A9EA Viking Air Limited · DHC-6-200
A9EA Viking Air Limited · DHC-6-300

Certification basis — 14 CFR

Part 21

Specific sections

§ 21.47
§ 21.55
§ 21.120

The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗