# STC SA4550SW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Blackhawk Modifications Inc. - Description: Installation of Pratt & Whitney PT6A-27 or PT6A-28 engines. - Status date: December 6, 2004 - Data sheets: A14CE - Certificate PDF: https://openairdocs.org/files/sha256/81/c5/81c5cc107bda83dc888569e44a51f9e434d62254adc371ce2b1d4e589348a74a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/01790B20386458B186256F87007191A6.0001 - Page: https://openairdocs.org/stc/SA4550SW ## ADs that name it None. ## Approved models (1) - Raytheon Aircraft Company 99 (TCDS A14CE) ## 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 SA4550SW This Certificate issued to Blackhawk Modifications, Inc. 1800 E. Sahara Drive Las Vegas, NV 89104 Part 23 of the Federal Aviation Regulations. Original Product Type Certificate Number : A14CE Make : Beech Model : 99 Installation of Pratt & Whitney PT6A-27 or PT6A-28 engines according to Drawing 01-0001, Revision B, dated 11/30/81, or later FAA approved revision. FAA Approved Airplane Flight Manual Supplement dated November 19, 1981, is required. Compatibility of this design change with previously approved modifications must be determined by the installer. 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 : June 11, 1981 Date of issuance : December 09, 1981 Date reissued : December 06, 2004 ( Signature) S. Frances Cox, Manager Special Certification Office, Southwest Region (Title) ## Every issue (1) - December 6, 2004: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/81/c5/81c5cc107bda83dc888569e44a51f9e434d62254adc371ce2b1d4e589348a74a) --- 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.