# STC SA2581CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Rockwell Collins Inc, United States
- Description: Install dual Collins TPR-720 Mode S transponders.
- Applied: July 21, 1989
- Status date: November 7, 1997
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/30/00/30006531a157a91d5b5d1614675fb2a792ec66fab18d8125605e449df4d08683
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6D1DF01F441DB9DA862578C6005D5381.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2581CE

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757 ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2581CE This certificate issued to: Rockwell Collins, Inc.

400 Collins Road NE, MS 164-100 Cedar Rapids, IA 52498 Purt 25 of the Federal Aviation 'Regululions as amended in the TCDS.

Original Product Type Cerlificute Number : AINM Make: Boeing Model: 757 Description of Type Design Change: Install dual Collins TPR-720 Mode S transponders per Collins Drawing Number 992-2606-001, no revision, dated December 4, 1989, or later FAA Approved revision.

Limitations and Conditions: (1) This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. (2) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Administrater of the Federal Aviation Administration .

Date of Application: July 21, 1989 Date Reissued: November 7, 1997 Date of Issuance: February 8, 1990 Date Amended: June 18, 1990 FEDERAL AVIATION By Direction of the Administrator Vale R-Kants (Signature) Dale R. Koonts

TOMINISTRATO Manager, DAS-3CE (Title) 47

## Every issue (1)

- November 7, 1997: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/30/00/30006531a157a91d5b5d1614675fb2a792ec66fab18d8125605e449df4d08683)

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