# STC SA4399SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc., United States
- Description: Modification of air to air heat exchanger (P/N 184360-1 series 2).
- Applied: January 15, 1981
- Status date: September 10, 2021
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE), [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/ab/a5/aba58280dbe04cb049957ab60b98686328146248033b1b2938f528e4422f45c9
- Approved model list and other attachments: [SA4399SW AML.pdf](https://openairdocs.org/files/sha256/0f/f9/0ff9d889344bc01d1b59c84fc9f0d213aa6075ce098602cabe95cd573db45146)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/425397E23C6C87CF86258758004A7539.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4399SW

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-8-70 Series ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- The Boeing Company 727-200 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:

SA4399SW Honeywell International Inc.

1944 E Sky Harbor Circle N Phoenix, AZ 85034 .

the * Regulations *See attached FAA Approved Model List (AML) Make: Original Product Type Certificate Number:

Modification of air to air heat exchanger (P/N 184360-1 series 2) in accordance with LORI drawing 80LB1017, Revision H, dated 1/29/90 or later FAA approved data.

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.

January 15, 1981 Date Reissued:

10/08/87; 10/01/96; 11/15/05; 11/14/12; 9/10/21 Date of Issuance: Date Amended:

June 26, 1981 8/20/81; 12/11/87; 2/7/91 Revision 3 By Direction of the Administrator Signature:

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

SA4399SW

### SA4399SW AML.pdf

FAA Approved Model List (AML) SA4399SW Honeywell International Inc.

1944 E Sky Harbor Circle N Phoenix, AZ 85034 Date of Issuance: June 26, 1981 Date Reissued: November 14, 2012; September 10, 2021 Item Aircraft Make Aircraft Model Original Type Certificate Number Regulation/Part 1 Boeing 727-200 A3WE CAR 4b 2 McDonnell Douglas DC-8 Series 70 4A25 CAR 4b FAA Approved: __________________________________ William S. Shealy ODA Administrator, ODA-602216-NM Date: September 10, 2021

## Every issue (2)

- September 10, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ab/a5/aba58280dbe04cb049957ab60b98686328146248033b1b2938f528e4422f45c9), [SA4399SW AML.pdf](https://openairdocs.org/files/sha256/0f/f9/0ff9d889344bc01d1b59c84fc9f0d213aa6075ce098602cabe95cd573db45146)
- November 14, 2012: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/5a/64/5a647f249ca42847c48ee733077c688ed06c8058e9b408d9a8fe9c75b7629777), [AML_SA4399SW.pdf](https://openairdocs.org/files/sha256/88/5f/885f7db9d1ccc5da28befa17411ffc7c96ca01288b7cbaaecc2fdf3d768f4837)

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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.