STC SA4148SW

Supplemental type certificate · Sierra Industries, Inc

Holder
Sierra Industries, Inc · United States
Status
Current · Reissued
Status date
December 1, 1999
Applied
June 11, 1979
Product
Aircraft · Large Airplane
Certification basis
Part 21
Data sheet
TCDS4A21

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

What it approves

Installation of Dual Collins AL101 Radio Altimeter Systems, Category I operation.

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.

of - Jlfefrmil ^fetation jAfcmmteiratum : OLerttftcate SA4148SW Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 4b Civil Air Boeing 707-100 Series Installation of Dual Collins AL101 Radio Altimeter Systems, Category I operation, according to Drawing List 45-1 dated 4/17/80, or later FAA approved revision.

FAA Approved Airplane Flight Manual Supplement dated July 2, 1980, is required.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

a- /Setminee&an aftzJe i& .• June 11, 1979 July 02, 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 j (City, State, and <JP code) from (Name of grantor) (Print or type) (Address of grantor) ( j\ timber and street) (City, Slate, 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.

No AD in this release names this STC

Approved models · 1

MakeModelData sheet
The Boeing Company707-100 Long Body4A21