# STC SA2-739

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sierra Industries, Inc, United States
- Description: Installation of picture window.
- Applied: February 23, 1959
- Status date: December 1, 1999
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS TC 2-576](https://openairdocs.org/tcds/TC%202-576)
- Certificate PDF: https://openairdocs.org/files/sha256/a7/dd/a7dd53a7518b141f69d053938c33245cf31d3a7cb80fa6c5aa225ab2cdfa3c23
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C0DF22F0B1C23B2B85256CC10083D4D4.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2-739

## ADs that name it (0)

None.

## Approved models (1)

- Douglas Aircraft Co. Inc. B-23 ([TCDS TC 2-576](https://openairdocs.org/tcds/TC%202-576))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2-739 This certificate issued to: Sierra Industries, Inc., a Texas Corporation Garner Field Road Uvalde, TX 78801 Purt 4 of the CiVi1 Air Regulations.

Original Product Type Certificate Number: 2-576 Make: McDonnell Douglas Corp.

Model: B-23 Description of Type Design Change:

Installation of Picture window in accordance with Howard Aero Engineering Report No. 37 dated 1/5/59.

This modification eligible on Douglas B-23, Serial Number 2714, Registration No.

N58091 Only.

Owsley, Manager TOMINISTRATOR 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, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code ) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink): - C FAA AC 69-5536

## Every issue (1)

- December 1, 1999: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a7/dd/a7dd53a7518b141f69d053938c33245cf31d3a7cb80fa6c5aa225ab2cdfa3c23)

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