# STC SA2448WE

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: United Air Lines Inc, United States
- Description: Installation of McDonnell Douglas Eros II collision avoidance system. (727-222)
- Applied: October 11, 1971
- Status date: June 26, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/26/b5/26b557bb504741a207af249e945b9eb8e31213aa7fc6afd317eca4f8532f6167
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CC6555A5067AFF57862577DC00727355.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2448WE

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727 ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## 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 RENDERED on 6-26-2009 Number: SA2448WE This certificate issued to: United Air Lines, INC.

Purt 4b of the CIVII Air Regulations. dated December 1953 (See T.C. Data Sheet AWE) Original Product - Typebertificate Number: ABWE Make: Boeing Mixtel: 727-222 Description of Type Design Change: Installation Of a McDonnel1 Douglas Eros II Collision Avoidance System in accordance with FAA sealed UAL Report F-1555 and FAA approved UAL Airplane Flight Manual Supplement, dated 22 NOV 1071 to Boeing Document D6-8728.1 or a later FAA approved revision.

Limitations and Conditions: The ARING characteristic 587 Collision Avoidance System does not adversely affect any other aircraft system, but the use of the CAS has not been evaluated. Therefore, flight operations must not be predicated on its 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 the aircrait.

Date of Application: 11 October 1971 Date Reissued:

Date of Issuance: 22 NOV 1971 Date Amended:

FEDERAL AVIATION By Direction of the Administrator (Signature )

TOMINISTRATO Loting Chief, Airefile Engineering Division

47.

## Every issue (1)

- June 26, 2009: Surrendered, Current. [certificate](https://openairdocs.org/files/sha256/26/b5/26b557bb504741a207af249e945b9eb8e31213aa7fc6afd317eca4f8532f6167)

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