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

ST01071WI-D

Installation of a TIA Microwave. Limited to aircraft serial number 45-200 and on without additional mods. Aircraft prior to this will require 110VAC system incorporation with associated circuit breakers as outlined in Learjet master document list M100368ICT. Held by Learjet INC, which holds 538 approved modifications in all. Last revised April 26, 2002. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Learjet Inc.
Models
Learjet 45
Type certificate
T00008WI
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.