# STC SA25CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Ontic Engineering and Manufacturing Inc.
- Description: Twin-engine electronic synchronizer.
- Status date: April 30, 2007
- Data sheets: 5A4
- Certificate PDF: https://openairdocs.org/files/sha256/3a/8f/3a8fe70e9edd3956690c7b88db94889949a1aaab862555934613b470dbf4d641
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/100C0304009B92EF862572D40048CE6A.0001
- Page: https://openairdocs.org/stc/SA25CE

## ADs that name it

None.

## Approved models (1)

- Raytheon Aircraft Company C50 (TCDS 5A4)

## 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.

Number SA25CE This certificate issued to

Part 3 of the Civil Air Regulations. (See Aircraft Specification No. 5A4 for Complete certification basis)

Original Product--Type Certificate Number: 5A4 Make: Raytheon Aircraft Company Model: C50

Installation of Twin Engines Electronic Synchronizer in accordance with the following data: Drawing Nos.

213002, 213027, 213031, 213033, 210491, 210163; Wiring diagra m dated 7-13-61; Photograph AA-5431.

Drawings 213061, 213062, 213063, 213064, 011661; Woodward Flight Manual Supplement dated April 16, 1962 or later FAA approved revision is required.

1. 210491 Governor Assembly for use with Hartzell Propellers P/N HC-83XF-2A installed per STC SA2-233; Unfeathering Accumulators installed per STC SA3-703.

2. 210163 Governor Assembly for use with standard aircraft with Beech 279-100 propellers.

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

4. 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 : November 16, 1961

Date of issuance : April 16, 1962

Date reissued : September 21, 2005, April 30, 2007

Date amended : December 11, 1962 December 23, 1964

( 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/sha256/3a/8f/3a8fe70e9edd3956690c7b88db94889949a1aaab862555934613b470dbf4d641)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.