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Other aircraft modifications

STC ST04530AT

FAA DRS lists ST04530AT as Current · Reissued, held by Preferred Improvements LLC, for Boeing DC3A-S1C3G, Boeing DC3C-S4C4G, and Boeing DC3C-SC3G, and 1 more aircraft configuration. Recorded change: Installation of a wingtip modification on DC3C aircraft (specific models listed). Snapshot dated June 30, 2026.

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Aircraft configurations
4
FAA revision date
FAA status
Current · Reissued

Recorded modification

What the FAA record covers

ST04530AT 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 DC3A-S1C3G, Boeing DC3C-S4C4G, and Boeing DC3C-SC3G, and 1 more aircraft configuration. Confirm the approved model list, serial effectivity, configuration, and certificate revision.

FAA record reference

STC number
ST04530AT
Product
Aircraft · Large Airplane
Country
United States
Application date
May 7, 2019
Revision date
December 12, 2021
CFR references
Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 21, Part 25