# STC SA2498NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Airweld Inc., United States
- Description: Installation of dual AiResearch GTCP85-98CK(D) Auxiliary Power Units (APU) in the forward baggage compartment.
- Applied: June 25, 1985
- Status date: April 28, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A25](https://openairdocs.org/tcds/4A25)
- Certificate PDF: https://openairdocs.org/files/sha256/21/e3/21e3216c5aa99a12035bed25626e1bd69534d957c355723d821b30f42fcce7e6
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B89F9964B32CABE986257448007D561D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2498NM

## ADs that name it (0)

None.

## Approved models (6)

- McDonnell Douglas Corporation DC-8-71 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-71F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-72 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-72F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-73 ([TCDS 4A25](https://openairdocs.org/tcds/4A25))
- McDonnell Douglas Corporation DC-8-73F ([TCDS 4A25](https://openairdocs.org/tcds/4A25))

## 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.

This Certificate issued to AIRWELD, INC.

8167 BELVEDERE AVENUE, SUITE D SACRAMENTO, CALIFORNIA 95826 Part 4b* of the Civil Air Regulations. *and additional condition identified in Cammacorp Compliance Report No. 162.2, Rev. “A”.

Original Product Type Certificate Number 4A25 Make : Douglas Model : DC-8-71, -71F, -72, -72F, -73, -73F Description of Type Design Change: Installation of a dual AiResearch GTCP85-98CK(D) Auxiliary Power Units (APU) in the forward baggage compartment in accordance with FAA approved Cammacorp Master Drawing List (MDL) number 83000, Revision “A”, dated June 18, 1985, or later FAA approved revisions.

FAA approved Airplane Flight Manual Supplement Camma corp Report Number 62.1, dated July 26, 1985, or later FAA approved revisions is required as part of this installation.

Limitations and Conditions: This approval is for APU ground operation only. The approval of the change in type design applies to the above-listed models onl y. This approval should not be extended to specific aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the interrelationship between this cha nge and any of those other previously approved modifications will introduce no adverse e ffect upon the airworthiness of that aircraft. If the holder agrees to permit another person to use this certificate to alter th e product, the holder shall give the other person written evidence of that permission.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application : June 25, 1985, Rev. July 22, 1985

Date of issuance : July 29, 1985

Date reissued : August 15, 1986; April 10, 1989;

July 16, 1997; January 5, 2000; December 3, 2001;

April 28, 2008

Date amended

( Signature)

Manager, Propulsion Branch Los Angeles Aircraft Certification Office ( Title)

## Every issue (1)

- April 28, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/21/e3/21e3216c5aa99a12035bed25626e1bd69534d957c355723d821b30f42fcce7e6)

---
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.