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

ST00957CH

Installation of AlliedSignal GNS-XLS flight management system in accordance with Europe Aero Design Master Data List, EP903-0131-00, Rev 3, dated 9/14/98, or later FAA approved revision. Held by Eac North America, INC. (S/B Ead Aerospace), which holds 2 approved modifications in all. Last revised July 11, 2001. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Lockheed Aircraft Corporation
Models
382G
Type certificate
A1SO
On this site
Lockheed Martin Corp 382 5 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.