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

SA00373DE

Installation of Honeywell TCAS 2000 System and Mode S Transponders. Held by Kings Avionics INC.. Last revised February 26, 2002. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Cessna Aircraft Company
Models
525
Type certificate
A1WI
On this site
Cessna 525 CitationJet (CJ series) 1,970 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.