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

ST00885WI

Installation of AlliedSignal CAS 67A Traffic Alert and Collision Avoidance System (TCAS II) and Dual MST-67A Mode-S transponders. Held by Jetcorp, which holds 38 approved modifications in all. Last revised July 3, 2000. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Gulfstream Aerospace Corporation
Models
G-IV
Type certificate
A12EA
On this site
Gulfstream G-IV Gulfstream IV 357 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.