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

ST02596CH

Installation of a Universal Avionics EFI-890R Multi-Function Display System with Application Server Unit and optional Vision-1 Synthetic Vision System. Held by Envoy Aerospace LLC, which holds 25 approved modifications in all. Last revised December 2, 2008. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Learjet Inc.
Models
60
Type certificate
A10CE
On this site
Learjet 60 239 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.