# STC SA4839NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: ACSS (Aviation Communication and Surveillance Syst, United States
- Description: Installation of provisions for wiring and hardware for Honeywell Traffic Alert and Collision Avoidance System (TCAS II).
- Applied: July 24, 1989
- Status date: February 28, 2002
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/18/05/18053164f6b56778447e858574d75c64f4fc427d523b5775183749c8b04b1853
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/248F0846A4D2ACE185256CC2000E3F0C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4839NM

## ADs that name it (0)

None.

## Approved models (3)

- The Boeing Company 757-200 ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))
- The Boeing Company 757-200CB Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))
- The Boeing Company 757-200PF Series ([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: SA4839NM This certificate issued to: ACSS (Aviation Communication & Surveillance Systems, LLC) 19810 North 7h Avenue Phoenix, AZ 85027 Certifies that the change in the type design for the following product with the limitations and conditions therefore as specified hereon meet's the wirworthiness requirement's of Part 25% of the Federal Aviation Regulutions, *(For Certitication basis see Type Certificate Data Sheet A2NM.)

Original Product Type Certificult Number: A2NM Make: Boeing Model: B757-200/200-PF/200-CB Description of Type Design Change: Installation of Honeywell Traffic Alert and Collision Avoidance System (TCAS II) in accordance with FAA approved Honeywell Master Data List Number ML4070373, Revision "P", dated July 24, 1990, or later FAA approved revision.

Honeywell Inc, Flight Manual Supplement Document No. 5140-0885, FAA approved on July 14, 1990, or later approved revision is required as part of this Installation.

Limitations and Conditions: . This installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. See also specific appendices for additional limitations. 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.

Date of Application: July 24, 1989 Date Reissued: February 28,2002 bute of sumnce: February 7, 1990 Bute umended: July 24, 1990

EDERAL AVIATIO (Signature TOMINSTRATO Los Angeles Aircraft Certification Office (Title)

FAA For 8110-2 (10-68) Page 1 of 2

## Every issue (1)

- February 28, 2002: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/18/05/18053164f6b56778447e858574d75c64f4fc427d523b5775183749c8b04b1853)

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