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

ST01559WI-D

: Modification of a Rockwell Collins, Inc. Pro Line 21 avionics system installation to include provisions for the conversion to an engineering flight test configuration in accordance with: (1) Rockwell Collins, Inc. Master Drawing List RCA-0153-001, Revision A, dated September 9, 2010 (2) Rockwell Collins, Inc. Airplane Flight Manual Supplement RCA-0155, Revision -, dated August 13, 2010 (3) Rockwell Collins, Inc. Instructions for Continued Airworthiness RCA-0156, Revision -, dated September 25, 2009, or later FAA approved revisions to (1) - (3). Held by Rockwell Collins INC, which holds 359 approved modifications in all. Last revised September 13, 2010. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.
Models
CL-600-2A12 (CL-601)
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 20, 2026.