# STC ST04608NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Mid Canada Mod Center, Canada
- Description: Installation of the Rockwell Collins TDR-94D Transponder Upgrade
- Applied: September 10, 2020
- Status date: March 11, 2021
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A53EU](https://openairdocs.org/tcds/A53EU)
- Certificate PDF: https://openairdocs.org/files/sha256/ca/9f/ca9f5a1a1528fcd40d67d3ab2c08d33b4c79875b8c77c601e18e2f65c700529e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121756425920240222152757.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST04608NY

## ADs that name it (0)

None.

## Approved models (9)

- ATR - GIE Avions de Transport Régional ATR42-300 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR42-320 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR42-500 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-101 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-102 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-201 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-202 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-212 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR - GIE Avions de Transport Régional ATR72-212A ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

IMPORT ST04608NY Mid Canada Mod Center 2450 Derry Road, Hanger 9 Mississauga, Ontario L5S 1B2 Part 25 Title 14 Code of Federal Reguations A53EU ATR ATR42-300, ATR42-320, ATR42-500, ATR72-101, ATR72-102, ATR72-201, ATR72-202, ATR72-212, ATR72-212A

1. Installation of the Rockwell Collins TDR-94D Transponder Upgrade must be in accordance with Avionics Design Services Ltd. Master Drawing List MDL20004 Revision N/C, Transport Canada Civil Aviation (TCCA) approved on July 10, 2020 or later TCCA approved revisions.

(See Description of Type Design Change Continued on Page 3 of 4)

1. The installer must determine whether this design change is compatible with previously approved modifications.

(See Limitations and Conditions Continued on Page 4 of 4) September 10, 2020 March 11, 2021 Timothy J. Hadsall Acting Manager, New York ACO Branch Compliance & Airworthiness Division Aircraft Certification Service 4

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

**IMPORT ST04608NY 4**

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

IMPORT ST04608NY Date of Issuance: March 11, 2021

Description of Type Design Change (continued):

2. The following documents are required for these installations and for the Instructions for Continued Airworthiness for the ATR42-300, ATR42-320, and ATR42-500 aircraft:

a. Operation of the Rockwell Collins TDR-94D Transponder Upgrade must be in accordance with Mid Canada Mod Center Flight Manual Supplement FMS20004-1 Revision N/C, TCCA approved on June 22, 2020, or later TCCA approved revisions.

b. Maintenance of the Rockwell Collins TDR-94D Transponder Upgrade must be in accordance with Mid Canada Mod Center Instructions for Continued Airworthiness ICA20004-1 Revision N/C, dated June 18, 2020, or later TCCA accepted revisions.

3. The following documents are required for these installations and for the Instructions for Continued Airworthiness for the ATR72-101, ATR72-102, ATR72-201, ATR72-202, ATR72-212, ATR72-212A aircraft:

a. Operation of the Rockwell Collins TDR-94D Transponder Upgrade must be in accordance with Mid Canada Mod Center Flight Manual Supplement FMS20004-2 Revision N/C, TCCA approved on June 22, 2020, or later TCCA approved revisions.

b. Maintenance of the Rockwell Collins TDR-94D Transponder Upgrade must be in accordance with Mid Canada Mod Center Instructions for Continued Airworthiness ICA20004-2 Revision N/C, dated June 18, 2020, or later TCCA accepted revisions.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

IMPORT ST04608NY Date of Issuance: March 11, 2021

Limitations and Conditions (continued)

2. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

3. This STC is applicable to all serial numbers for these Make-Models.

Note: This STC does not require a revised Electrical Wiring Interconnection System (EWIS) Instructions for Continued Airworthiness (ICA).

----------END----------

## Every issue (1)

- March 11, 2021: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ca/9f/ca9f5a1a1528fcd40d67d3ab2c08d33b4c79875b8c77c601e18e2f65c700529e)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.