# STC SA9081SC-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc., United States
- Description: Recore of Hamilton Standard heat exchanger, P/N 719235-8, -9 in accordance with Honeywell LORI Sealed Drawing List SDL3786-1 Rev. B, dated September 28, 2005 or later FAA approved revision.
- Applied: March 17, 1998
- Status date: September 27, 2021
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/36/89/368992ed6cde9b157d39af9ac59235840b0c9997cd2ba1408fce3fea967f4eae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5C269B2D07B5A41A8625876C00559810.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA9081SC-D

## ADs that name it (0)

None.

## Approved models (11)

- The Boeing Company 747-100 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-100B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200C Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-300 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-400 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-400D Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-400F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747SP Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747SR Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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:

SA9081SC-D Honeywell International Inc.

1944 E Sky Harbor Circle N Phoenix, AZ 85034 .

the Federal Aviation Regulations A20WE Make: Original Product Type Certificate Number:

Boeing 747-400, -400D, -400F, -200B, -200F, -200C, -100, -100B, -300, 747SR, 747SP Recore of Hamilton Standard heat exchanger, P/N 719235-8, -9 in accordance with Honeywell LORI Sealed Drawing List SDL3786-1 Rev. B, dated September 28, 2005 or later FAA approved revision.

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.

March 17, 1998 Date Reissued:

September 29, 2005; September 27, 2021 Date of Issuance: Date Amended:

April 28, 1998 September 29, 2005 By Direction of the Administrator Signature:

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

SA9081SC-D

## Every issue (2)

- September 27, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/36/89/368992ed6cde9b157d39af9ac59235840b0c9997cd2ba1408fce3fea967f4eae)
- September 29, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/55/5a/555a074db458c921711f2826b750692f9573343e016120e705ef85aa84c092f6)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.