# STC SA1054GL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ontic Engineering and Manufacturing Inc., United States
- Description: Removal of P/N 213763 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: April 30, 2007
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-783](https://openairdocs.org/tcds/A-783)
- Certificate PDF: https://openairdocs.org/files/sha256/74/17/741736bcd33923c81d4b3c9b6094eca2eec052d770d0916d1e96c81ec9f3992f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A55B0851ACAAC6BA862572D400522A2D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1054GL

## ADs that name it (0)

None.

## Approved models (1)

- Frakes Aviation G-73 ([TCDS A-783](https://openairdocs.org/tcds/A-783))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Part 4a of the Civil Air Regulations. (See Aircraft Specification No. A-783 for complete certification basis.)

Original Product--Type Certificate Number: A-783 Make: Frakes Aviation Model: G-73

Removal of P/N 213763 propeller synchrophaser control box and electrical connector, and installation of P/N A213796 control box, electrical connector, and remote switch in accordance with 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.

Ontic Engineering and Manufacturing Inc.

20400 Plummer Street Chatsworth, CA 91311 Date of application : July 3, 1986

Date of issuance : August 7, 1986

Date reissued : October 3, 2005, April 30, 2007

( Signature) Thomas A. Enyart Manager, Propulsion Branch Los Angeles Aircraft Certification Office

( Title)

## Every issue (1)

- April 30, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/74/17/741736bcd33923c81d4b3c9b6094eca2eec052d770d0916d1e96c81ec9f3992f)

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