# STC SA1055GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ontic Engineering and Manufacturing Inc., United States
- Description: Removal of TC P/N 213761 or213763 propeller synchrophaser control box and electrical connector and installation of P/N A213796 control box, electrical connector, and remote switch.
- Applied: July 3, 1986
- Status date: November 23, 2004
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A21EU](https://openairdocs.org/tcds/A21EU)
- Certificate PDF: https://openairdocs.org/files/sha256/5f/56/5f56e1616738d65138aae8a8eaa2be579e4403b5abd2bf856ae54df9be650fb8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FFC3C0A720BB408C86257FBD00732B44.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1055GL

## ADs that name it (0)

None.

## Approved models (1)

- British Aerospace (Scotland) HP Jetstream Model 3101 ([TCDS A21EU](https://openairdocs.org/tcds/A21EU))

## 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: SA1055GL This certificate issued to: Ontic Engineering and Manufacturing Inc.

20360 Plummer Street Chatsworth, California 91311 Purt 23 of the Federal Aviation Pegulutions. (See Type Certificate Batu Seet Ne. A23EU for complete certificution busis.)

Original Product Type Certificate Number: A2VEU Make: British Acrospace Model: Jetstream 3101 Description of Type Design Change:

Removal of type certificated P/N 213761 or 213763 propeller synchrophaser control box and electrical connector, and installation of P/N A213796 control box, electrical connector, and remote switch per Woodward Governor Installation Instruction Drawing No. 9963-146, Rev. B, dated July 2, 1986, or later FAA approved revision.

1. Compatibility of this design change with previous modifications must be determined by the installer.

2. 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: July 3, 1986 Date Reissued: November 23, 2004 Dule of issuunce: August 7, 1986 Date Amended:

FEDERAL AVIATION By Direction of the Administrator (Signature) Thaddeus D. Krolicki Jr.

TOMINISTRATOR Manager, Propulsion Branch Chicago Aircraft Certification Office (Title) ation of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both.

## Every issue (1)

- November 23, 2004: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5f/56/5f56e1616738d65138aae8a8eaa2be579e4403b5abd2bf856ae54df9be650fb8)

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