# STC ST500SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: American Airlines Inc, United States
- Description: Installation of a McDonnell Douglas EROS II Collision Avoidance System
- Applied: December 7, 1972
- Status date: December 18, 2015
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/c1/1b/c11bcf418eea9d926a9ae1b25f521bfe0b9a8194b6036f645ae0f29bb8418d4d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CC3F04EF58D8F22186257F64004E647B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST500SO

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 737-200 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## 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 (5/14) Page 1 of

Part of the

Signature

Title ST500SO American Airlines, Inc.

3900 N. Mingo Road Engineering Dept., MD 208 Tulsa, Oklahoma 74116 Federal Aviation Regulations.

1. Installation of a McDonnell Douglas EROS II Collision Avoidance System per Piedmont Airlines Engineering Authorization No. 737-268, Issue A.

2. Airplane Flight Manual Supplement, dated April 21, 1972, is required with this installation.

1. Flight operations are not to be predicated on the use of this system.

2. You cannot use descriptive data about this design change to duplicate other products. This approval is limited to only the installation made in Boeing Model 737-200 Serial Number 19555. This STC does not permit manufacturing of parts for multiple installations.

Gaetano Sciortino Manager New York Aircraft Certification Office The Boeing Company 737-200 June 01, 1989, December 18, 2015 December 07, 1972 April 21, 1972 A16WE 3

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

3 ST500SO

FAA Form 8110-2 (5/14) Page 3 of

3 Date Reissued: December 18, 2015

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Boeing Model 737 series aircraft is as follows:

a. The type certification basis for Boeing Model 737 series aircraft is shown on TCDS A16WE for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change is as shown on TCDS A16WE, except as follows:

Regulations at the amendment level in TCDS A16WE

**25.1-25.3, 25.7, 25.15 ----------END---------- ST500SO**

## Every issue (1)

- December 18, 2015: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c1/1b/c11bcf418eea9d926a9ae1b25f521bfe0b9a8194b6036f645ae0f29bb8418d4d)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.