What it approves
Installation of aft 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.
JBmteb J&tntee ©f .America ranspirtaitutt - Jlfcheral <&frtatum ^ministration (tterttftcate SA4156SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 4b Civil Air Boeing 707-300, -400 Series Installation of aft airstair in accordance with Dee Howard Drawing List No. 42 dated July 25, 1980, or later FAA approved revision.
Compatibility of this modification with other previously approved modifications must be determined by the installer.
Aatyient&eS,
•ixvOan .• July 14, 1980 .-July 25, 1980 '.• December 1, 1999 (Signature) Michele M. Owsley, Manager Airplane Certification Office, Southwest Region (Title)
TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number _ to (Name of transferee) (Address of transferee) (Number and street) (City, Slate, and <7/> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street ) ( City, State, and <7P code) Extent of Authority (if licensing agreement):
Signature of grantor (In ink):
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.