STC SA553NE

Installation of 425 or 500 U.S. gallon auxiliary fuel system in aft cargo compartment. \nCONFIGURATION 2, is eligible on 737-300 series airplanes S/N 23743 and 23930 through 23937

Current Reissued Aircraft Large Multi-Engine Rev 04/27/2009 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 (2)

A16WE The Boeing Company · 737-400 Series
A16WE The Boeing Company · 737-300 Series

Certification basis — 14 CFR

Part 21
Part 25

Specific sections

§ 21.47
§ 21.111
§ 21.113
§ 21.115
§ 21.117
§ 21.119
§ 21.120

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