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

ST01256WI-D

Modification of a Collins TPR-720, TPR-900 or TPR-901 Mode S Transponder System installation with an ATC/TCAS Control Panel to an Elementary Surveillance Compliant Collins TPR-901 Mode S Transponder System installation with a Flight ID/ATC/TCAS Control Panel in accordance with Collins Drawing Index as listed on AML No. ST01256WI-D, Revision -, or later FAA approved revision. Held by Rockwell Collins INC, which holds 359 approved modifications in all. Last revised March 17, 2009. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; Airbus; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; BAE Systems (Operations) Limited; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; The Boeing Company; Fokker Services; Fokker Services; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; Lockheed Martin Corporation; Sabreliner Corporation
Models
A310-203, A310-204, A310-221, A310-222, A310-304, A310-322, A310-324, A310-325, Avro 146-RJ100A, Avro 146-RJ70A, Avro 146-RJ85A, BAe 146-100A, BAe 146-200A, BAe 146-300A, DC-8-61, DC-8-61F, DC-8-62, DC-8-62F, DC-8-63, DC-8-63F, DC-8-71, DC-8-71F, DC-8-72, DC-8-72F, DC-8-73, DC-8-73F, 707-300B Series, 707-300C Series, 737-200 Series, 737-200C Series, 737-300 Series, 737-400 Series, 737-500 Series, 737-600 Series, 737-700 Series, 737-700C Series, 737-900 Series, 767-200 Series, 767-300 Series, 767-300F Series, 767-400ER Series, 747-100 Series, 747-100B Series, 747-100B SUD Series, 747-200B...
Type certificates
A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A35EU, A49EU, A49EU, A49EU, A49EU, A49EU, A49EU, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A25, 4A26, 4A26, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A16WE, A1NM, A1NM, A1NM, A1NM, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A20WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A22WE, A2NM, A2NM, A2NM, A2NM, A3WE, A3WE, A3WE, A3WE, A3WE, A3WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, A6WE, T00001SE, T00001SE, T00001SE, A20EU, A20EU, A1SO, A1SO, A23WE, A23WE, A23WE, A23WE, A2WE
On this site
Boeing 707 9 registered
Boeing 727 37 registered
Boeing 737 2,892 registered
Boeing 747 192 registered
Boeing 757 440 registered
Boeing 767 584 registered
Boeing 777 358 registered
British Aerospace AVRO 146 12 registered
British Aerospace BAE 146 15 registered
Douglas DC-10 8 registered
Douglas DC-8 6 registered
Douglas DC-9 7 registered
Mcdonnell Douglas Aircraft Co MD-88 10 registered
Mcdonnell Douglas DC-10 17 registered
Mcdonnell Douglas DC-9 93 registered
Mcdonnell Douglas MD-11 104 registered
Rockwell International Corp NA-265 33 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.