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

ST01739LA

Installation of AirWorks Cockpit Door Surveillance Systems and Advanced cockpit Door Surveillance Systems. Held by Aero Technik INC., which holds 17 approved modifications in all. Last revised November 19, 2024. System: airframe structure.

What it applies to

Kind of product
Aircraft
Design holder
The Boeing Company; The Boeing Company; The Boeing Company
Models
777-200 Series, 777-300 Series, 777-300ER Series
Type certificates
T00001SE, T00001SE, T00001SE
On this site
Boeing 777 358 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.