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

SA5628SW

Installation of Collins No. 2 ADF-60A automatic direction finder system. Held by Page Avjet CORP, which holds 356 approved modifications in all. Last revised July 9, 2008. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.
Models
CL-600-1A11 (CL-600)
Type certificate
A21EA
On this site
Bombardier CL-600 Challenger and CRJ 1,656 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 7, 2026.