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Avionics

STC ST4532NM

FAA DRS lists ST4532NM as Current · Reissued, held by Avtech Corporation, for Boeing 737-900 Series, Boeing 737-400 Series, and Boeing 737-100 Series, and 9 more aircraft configurations. Recorded change: Installation of Coltech CTD-80 ATSCALL, enabling company calling of selected aircraft via company selected radio. Snapshot dated June 30, 2026.

FAA-listed holder
Avtech Corporation
Aircraft configurations
12
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

ST4532NM identifies the approval, recorded holder, named aircraft, and modification scope. It does not confirm kit availability, serial-number effectivity, data rights, price, or installation authority.

Applicability

Aircraft named in FAA DRS

Named aircraft: Boeing 737-900 Series, Boeing 737-400 Series, and Boeing 737-100 Series, and 9 more aircraft configurations. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

Boeing 737-900 SeriesA16WEBoeing 737-400 SeriesA16WEBoeing 737-100 SeriesA16WEBoeing 737-200 SeriesA16WEBoeing 737-200C SeriesA16WEBoeing 737-300 SeriesA16WEBoeing 737-500 SeriesA16WEBoeing 737-700 SeriesA16WEBoeing 737 SeriesA16WEBoeing 737A16WEBoeing 737-800 SeriesA16WEBoeing 737-600 SeriesA16WE

Buyer checks

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