# STC SA399SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Installation of APU
- Applied: June 12, 1964
- Status date: August 31, 2000
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-814](https://openairdocs.org/tcds/A-814)
- Certificate PDF: https://openairdocs.org/files/sha256/84/3a/843a02cd50b1d0710ae3ba623cb6c361638103a41e1f2f1f8057aa0f90bb9d1e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E9D6B1DDF6F73D3D86257DF900717F90.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA399SW

## ADs that name it (0)

None.

## Approved models (1)

- Vickers-Armstrongs (Aircraft Limited) Viscount 745D ([TCDS A-814](https://openairdocs.org/tcds/A-814))

## 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: SA3995W This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airvorthiness requirement's of Part 10 of the Civi1 Air Regulations.

Original Product Type Certificate Number: 814 Make: Vickers Discount Model: 745D Description of Type Design Change:

Installation of APU per Drawings as shown on Drawing List #328310 (APU Installation) Rev. A dated 6/22/64, or later FAA approved revision.

FAA Approved Airplane Flight Manual Supplement dated 6/23/64 is required.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Vickers Viscount Model 745D, Serial No. 233, only.

Date of Application: June 12, 1964 Date Reissued: 9/4/92; 12/21/98; 8/31/00 Date of Issuance: June 24, 1964 Date Amended: March 22, 1982 Rev. 2 FEDERAL AVIATION By Direction of the Administrator (Signature) S. Frances Cox TOMINISTRATOS Manager, Special 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):

Signature of grantor (In ink): -

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/84/3a/843a02cd50b1d0710ae3ba623cb6c361638103a41e1f2f1f8057aa0f90bb9d1e)

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