# STC SA493CH - Type: Supplemental type certificate - Status: Current, Amended - Holder: D'Shannon Products Ltd., United States - Description: Increase in maximum gross weight from 3600 lbs. to 3700 lbs. with installation of Continental I0-550-B engine in accordance with D'Shannon Products Installation Instruction 71-20-00, dated 10/20/88, or later FAA-approved revision; and installation of Cooling Air Baffles in accordance with D'Shannon Products Installation Instruction DSP1M95-2, dated 6/1/95, FAA-approved 6/21/95 or later FAA Approved revisions. - Applied: January 12, 1996 - Status date: February 25, 2021 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15) - Certificate PDF: https://openairdocs.org/files/sha256/e6/0d/e60d6dc53ccfb8dad6adbabb6dada298960c6a3cf969cc0f3f95df38b8c18039 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/16E68F66BC696FB18625869D00033B9A.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA493CH ## ADs that name it (0) None. ## Approved models (13) - Hawker Beechcraft Corporation 36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation A36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. 35-C33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. E33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. E33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. F33A ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. F33C ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. G33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. G36 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. S35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. V35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. V35A ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Textron Aviation Inc. V35B ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) ## 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. Original Product--Type Certificate Number : 3A15 Make : Textron Aviation Inc. Model : 36, A36, G36, S35, 35-C33A, E33A, E33C, G33, V35, V35A, V35B, F33A, F33C Description of Type Design Change: Increase in maximum gross weight with installation of Continental IO-550-B engine in accordance with D’Shannon Product installation 71-20-00 dated 10/20/88 or later FAA approved revision or with Textron Aviation installed IO-550-B engine, and installation of cooling air baffles in accordance with D’Shannon Product Installation Manual DSP-IM95-1, DSP-IM95-2 Revision H, dated 2/26/2020 or later FAA approved revision. 1) Refer table shown below for applicability of airplane models and limitations. 2) Engine, propeller(s) and baffle installations must be in accordance with those authorized by STC SA2200SW and STC SA368CH, respectively. 3) Compatibility of this design change with previously approved 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. Date amended : November 5, 2020, February 25, 2021 United States of America Department of Transportation -- Federal Aviation Administration Supplemental Type Certificate Number SA493CH D’Shannon Products, Ltd. 1309 County Road 134 Buffalo, MN 55313 Part 3 of Civil Aviation Regulations. (See Type Certificate Data Sheet No. 3A15 for complete certification basis.) Date of application : January 12, 1996 Date reissued : June 2, 2011, June 17, 2011 Date of issuance : April 4, 1996 By direction of the Administrator (Signature) Roy E. Boffo Manager, Propulsion and Program Management Section Chicago ACO Branch This certificate issued to (Title) PAGE 1 of 3 PAGES Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code) from (Name of grantor) (Print of type) (Address of grantor) (Number and street) (City, State, and ZIP code) Signature of grantor (In ink): United States of America Department of Transportation -- Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA493CH Date of Amendment: February 25, 2021 Limitations and Conditions: (Continued from Page 1 of 3) **AIRPLANE MAKE** **AIRPLANE MODEL** MAXIMUM GROSS WEIGHT [Lbs] AFMS Textron Aviation Inc. 36, A36 (S/N E-1 thru E-2110 except E-1946 and E-2104) 3860 FMS-36E-GWI96-3 [Rev 2, dated Oct-25-2020] A36, G36 (S/N E-1946, E-2104, E- 2111 and subsequent) 3910 FMS-36L-GWI96-3 [Rev 1, dated Oct-25-2020] S35 3581 FMS-S35-GWI96-3 [Rev 1, dated Oct-25-2020] 35-C33A, E33A, E33C 3610 FMS-CE-GWI96-3 [Rev 1, dated Oct-25-2020] G33 3610 FMS-G33-GWI96-3 [Rev 1, dated Oct-25-2020] V35, V35A, V35B 3581 FMS-V35-GWI96-3 [Rev 1, dated Oct-25-2020] F33A, F33C 3610 FMS-F33-GWI96-3 [Rev 1, dated Oct-25-2020] …END ## Every issue (2) - February 25, 2021: Amended, Current. [certificate](https://openairdocs.org/files/sha256/e6/0d/e60d6dc53ccfb8dad6adbabb6dada298960c6a3cf969cc0f3f95df38b8c18039) - June 17, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/1d/5b/1d5b5dcbea0c721a7c20338488f0044880edc91edeae8406a0062fdb32831682) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.