# STC SA3504SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Southwest Cooler Svc Inc, United States
- Description: Remanufacture of ECU heat exchanger by installing new heat exchanger matrix.
- Applied: October 30, 1984
- Status date: September 16, 1985
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/0d/95/0d95c987d364170b00c2ff44bdd393849b87c0f4e49372f15711ba401842e208
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/61B70C29FF84FB7D85256CC2000A98C3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3504SW

## ADs that name it (0)

None.

## Approved models (12)

- The Boeing Company 737-100 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-200 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-200C Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-300 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-400 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-500 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-600 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-700 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-700C Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-800 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-900 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))
- The Boeing Company 737-900ER 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.

United 3tatu of ararrica Bcpartmcnt of ICransportarion-federal auiation administration Supplemental 'Cuje Certificate SA330/4SW Project T6929SW-S JLC-191 < Southwest Cooler Service, Inc.

3939 Platinum Nay Dallas, Texas 75237 *n dht /uA<& afAia 75 <af^n* Federal iLifaiatnju Jvocuic/——•-s-ySu''^ei^^fica^e'^/lumoer- A16WE Boeing 737 Series f,/ Reuanufacture of ECU heat exchanger by installing new heat exchanger matrix in accordance with Southwest Cooler Service, Inc. Drawing 50160, Revision A dated 5/15/85, or later FAA approved revision.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

<-^4n^ sCtrdt/'Zjia^ ^n^J^ A&/i/u>r^i*i&da^^/ / / & / / / f/ /2ic**Tn4in4*i£^^ Sxdrn*<njAJva£c*r'JX.

October 30, 1984 ^L** September 16, 1985 ^^72 (Signature) Manager, Aircraft Certification Division Southwest Region ———————— (Title)

Tkis arttfieatt may tt transftmd in tetorJanee with FAR 21.47.

»AAFo*.«llO-2(10-6«)

INSTRUCTIONS: The transfer endowment below may be used to n<xify .he appropriate FAA Regional Office of i he transfer of thu Supplemenul Type Certificate.

The FAA will reitsue the certificate in the name of the transferee and forward it .o him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee). (Xumtxr ml On*) from (Name of grantor) (Print or type).

(Address of grantor) (A'umttr tn* lirtttj Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

, ii « r. o n i«n«-««»-'»»o

## Every issue (1)

- September 16, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0d/95/0d95c987d364170b00c2ff44bdd393849b87c0f4e49372f15711ba401842e208)

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