STC SA8000NM

Supplemental type certificate · Dow Aero LLC

Holder
Dow Aero LLC · United States
Status
Current · Reissued
Status date
February 5, 2015
Applied
January 31, 1991
Product
Aircraft · Large Airplane
Certification basis
Part 25
Data sheet
TCDSA20WE

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation of World Auxiliary Power Company (WAPCO) lower forward cargo door airstair

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

SA8000NM Dow Aero, LLC 6800 Camille Avenue Oklahoma City, OK 73149 Part 25 the Federal Aviation Regulations A20WE Boeing 747-200 Series

1. The installer must determine whether this design change is compatible with previously approved modifications.

2. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

01/31/1991 07/16/1997 01/05/2000 12/03/2001 06/15/1994 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of World Auxiliary Power Company (WAPCO) lower forward cargo door airstair in accordance with FAA Approved WAPCO Drawing List Number 1423-7400, Revision "C", dated July 24, 1992, or later FAA approved revision.

FAA 8110-2 ( 10/24) Page 2 of __

SA8000NM 03/13/2025 3

SA8000NM 03/13/2025 Date Reissued:

04/28/2008; 06/16/2014; 12/30/2014; 02/05/2015; 03/13/2025

-END- 3 3

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 3

MakeModelData sheet
The Boeing Company747-200B SeriesA20WE
The Boeing Company747-200C SeriesA20WE
The Boeing Company747-200F SeriesA20WE

Every issue · 5

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
February 5, 2015Reissued, currentCertificate
February 5, 2015Reissued, earlier issueCertificate
December 30, 2014Reissued, earlier issueCertificate
June 16, 2014Reissued, earlier issueCertificate
April 28, 2008Amended, earlier issueCertificate