What it approves
Installation of a Winters Air Stairs in the forward passenger entry door.
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.
This Certificate issued to AIRWELD, INCORPORATED 8167 Belvedere Avenue, Suite D Sacramento, California 95826
Part 4b of the Civil Air Regulations.
Original Product Type Certificate Number 4A25 Make : McDonnell Douglas Model : DC-8-21, DC-8-61, DC-8-62, DC-8-63, DC-8-63F, DC-8-71, DC-8-72, DC-8-73, and DC-8-73F Description of Type Design Change: Installation of a Winters airstair in the forward passenger entry door in accordance with FAA sealed Winters Master Drawing List Number 1423-8100, Revision “Y”, dated January 11, 1985, or later FAA approved revision.
Limitations and Conditions: This approval of this change in type design applies to the above noted aircraft only.
This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. This determination shoul d include consideration of significant changes in weight distribution such as an increase in the fixed disposable we ight of the fuselage. 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.
Date of application : December 26, 1979
Date of issuance : May 29, 1980
Date reissued : N ovember 2, 1988; July 16, 1997; January 5, 2000; December 3, 2001; April 28, 2008
Date amended : November 25, 1981; August 2, 1985
( Signature) Mansour Rafat Manager, Cabin Safety/Mechanical & Environmental Systems Branch Los Angeles Aircraft Certification Office (Title)
Transfer the ownership of Supplemental Type Certificate Number
to (Name of transferee)
(Address of transferee) (Number and street)
(City, State, and ZIP Code)
from (Name of grantor) (Print or type)
(Address of grantor) (Number and street)
(City, State, and ZIP Code)
Signature of grantor (In ink):
U.S. GPO 1987-763-289
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 9
| Make | Model | Data sheet |
|---|---|---|
| McDonnell Douglas Corporation | DC-8-21 | 4A25 |
| McDonnell Douglas Corporation | DC-8-61 | 4A25 |
| McDonnell Douglas Corporation | DC-8-62 | 4A25 |
| McDonnell Douglas Corporation | DC-8-63 | 4A25 |
| McDonnell Douglas Corporation | DC-8-63F | 4A25 |
| McDonnell Douglas Corporation | DC-8-71 | 4A25 |
| McDonnell Douglas Corporation | DC-8-72 | 4A25 |
| McDonnell Douglas Corporation | DC-8-73 | 4A25 |
| McDonnell Douglas Corporation | DC-8-73F | 4A25 |