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

ST01240WI

Installation of Universal Avionics Terrain Awareness and Warning System (TAWS). Data required: 1) Duncan Aviation Document List No. 040119003, Rev. E, dated April 9, 2004, and (2) Duncan Aviation Document No. 040119004 , FAA Approved Airplane Flight Manual Supplement (AFMS) dated April 13, 2004; or later FAA Approved Revisions to (1) or (2). Held by Duncan Aviation INC, which holds 316 approved modifications in all. Last revised April 13, 2004. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Lockheed Martin Corporation
Models
1329-25
Type certificate
2A15
On this site
Lockheed 1329 6 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 20, 2026.