# STC SA7592SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc., United States
- Description: Remanufacture AiResearch P/N 176840-1 Bleed Air Precooler Assembly by replacing the core assembly
- Applied: May 6, 1988
- Status date: September 10, 2021
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/0a/ba/0aba19944f4b9539c62258c9ecff266df1d04ea5754a2a984a02d00828bbba56
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9B295D0C2CC48008862587580040B976.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA7592SW

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-100 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## 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 States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificate issued to:

SA7592SW Honeywell International Inc.

1944 E Sky Harbor Circle N Phoenix, AZ 85034 .

the Civil Air Regulations A3WE Make: Original Product Type Certificate Number:

Boeing 727-100 Remanufacture AiResearch P/N 176840-1 Bleed Air Precooler Assembly by replacing the core assembly in accordance with LORI Drawing 85LB2077, Revision C, dated May 12, 1989, or later FAA approved revisions.

1) Compatibility of this modification with previously installed equipment must be determined by installer.

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.

May 6, 1988 Date Reissued:

10/1/96; 11/15/05; 11/14/12; 9/10/21 Date of Issuance: Date Amended:

May 17, 1989 By Direction of the Administrator Signature:

William S. Shealy ODA Administrator, ODA-602216-NM

SA7592SW

## Every issue (3)

- September 10, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0a/ba/0aba19944f4b9539c62258c9ecff266df1d04ea5754a2a984a02d00828bbba56)
- November 14, 2012: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/95/a1/95a1bd245d2c624e1bf50ebc3ccaed8c66bdadf72524b08635edf508f86a2f65)
- November 15, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/42/91/4291608f3f1449b84ba475734e6487384bc29a273dceb443eb575e1919300c8d)

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