The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · issued

ST03924AT

Installation of Powertech Electronic Powered Window Shades in accordance with Aerospace Technologies Group (ATG) Engineering Drawing List LIEDL30001, Revision A, Dated October 20, 2008, or later FAA approved revision. Held by Aerospace Technologies Group INC., which holds 12 approved modifications in all. Last revised July 15, 2011. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company
Models
757-200 Series, 757-200CB Series, 757-200PF Series, 757-300 Series
Type certificates
A2NM, A2NM, A2NM, A2NM
On this site
Boeing 757 440 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 21, 2026.