# STC SA166CE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Ontic Engineering and Manufacturing Inc. - Description: Twin-engine electronic synchronizer and unfeathering system. - Status date: April 30, 2007 - Data sheets: 5A4 - Certificate PDF: https://openairdocs.org/files/sha256/89/a5/89a5023007d26b5f452ed1ba5b59c36d0f59c607f4b654bf492da0ea6f75a96e - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/927F596CAA77C7FC862572D4004A452F.0001 - Page: https://openairdocs.org/stc/SA166CE ## ADs that name it None. ## Approved models (1) - Raytheon Aircraft Company B50 (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. 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: B50 Installation of Twin engine Electronic Synchronizer and Unfeathering System in accordance with Woodward Installation Manual for Woodward Electronic Synchronizer Kit; Woodward Accumulator Unfeathering Kit for Modified Beech Model B50 dated September 24, 1963 or later FAA approved revision. 1. Aircraft engines must be modified in accordance with STC SA2-66, except Woodward 210491 installation. 2. Approved Flight Manual Supplements for Woodward Electronic Propeller Synchronizer dated September 24, 1963, and Approved Flight Manual Supplements for Unfeathering Kit dated September 24, 1963 or later FAA approved revision are required. 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 : September 5, 1963 Date of issuance : September 30, 1963 Date reissued : September 26, 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/sha256/89/a5/89a5023007d26b5f452ed1ba5b59c36d0f59c607f4b654bf492da0ea6f75a96e) --- 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.