# STC SA28EA - Type: Supplemental type certificate - Status: Current, Reissued - Holder: D'Shannon Products Ltd., United States - Description: Installation of 12-gallon fiberglass wing tip fuel tanks. - Applied: November 20, 1961 - Status date: August 16, 2011 - Product: Aircraft, Single-Engine - Certification basis: Part 21, Part 23 - Data sheets: [TCDS 3A15](https://openairdocs.org/tcds/3A15), [TCDS A-777](https://openairdocs.org/tcds/A-777) - Certificate PDF: https://openairdocs.org/files/sha256/28/a3/28a39e2df7d185c786c7d10142edafbce9e545627517b024c53150aae1dffe05 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6E57DEAFF8876CD2862578F800473109.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA28EA ## ADs that name it (0) None. ## Approved models (13) - Hawker Beechcraft Corporation 35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation 35-33 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation A35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation B35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation C35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation D35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation E35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation F35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation G35 ([TCDS A-777](https://openairdocs.org/tcds/A-777)) - Hawker Beechcraft Corporation H35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation J35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation K35 ([TCDS 3A15](https://openairdocs.org/tcds/3A15)) - Hawker Beechcraft Corporation M35 ([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. This certificate issued to Part 23 / Car 3 of the Regulations. Configuration 1 Installation of 12 gallon fiberglass wing tip fuel tanks RB1-100, Revision L, (Serial Numbers 5000 and up; 135 to 186), and fuel system in accordance with Flight Extenders Inc. Installation Instructions RB1-201 dated June 15, 1962, and Drawing RB1-201A, (FEI Change Notice No. 1 dated 3-16-63) for Beech Model 35 only. D’Shannon Products, Ltd. 1309 County Road 134 Buffalo, MN 55313 Original Product --Type Certificate Number: 3A15 Models H35, J35, K35, M35 35-33 A777 Models 35 & A35 thru G35 Incl. Make: Beech Model : 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, 35-33 Date reissued : August 27, 1968, August 8, 1973, October 3, 1973; February 14, 1975 August 16, 2011 Date amended : December 17, 1962; April 4, 1963 ( Signature) Melvin D. Taylor, Manager Atlanta Aircraft Certification Office ( Title) Date of application : November 20, 1961 Date of issuance : April 30, 1962 INSTRUCTIONS: Thc transfer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of this Supplemental Type Certificate. The FAA will reissue the certifi cate in the name of the tran sferee and forward it to him. 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 or type) (Address of grantor) (Number and Street) (City, State, and ZIP code) Signature of grantor (In ink): FAA FORM 8110-2-1(10-69) PAGE 3 of 5 PAGES (Continuation Sheet) Number SA28EA Date: August 8, 1973, October 3, 1973, February 14, 1975 August 16, 2011 Supplemental Type Certificate Addendum No. SA28EA Installation of 13.5 gallon fiberglass wing tip fuel tanks RB1-100, Revision L, (Serial Numbers 135 to and including 186) in accordance with Flight Extenders Installation Instructions Manual FEI-35(V) dated April 9, 1962, and (FEI Engineering Change Notice No. 1 dated 3-16-63) for all models as listed herein excluding Beech Model 35. Configuration 2 FAA Approved “Flight Extenders, Inc. Service Bulletin No. 1” dated March 25, 1963, increases RB1-100 wing tip tanks fuel capacity from 13.5 gallons to 14.7 gallons for Beech Models as listed herein, excluding Beech Model 35, upon which are installed Flight Extenders Inc. RB1-100 wing tip tanks, Serial Numbers 100 to and including 186. Configuration 3 Beech Models affected: All beech Models listed herein, excluding Beech Model 35. Installation of 15 gallon fiberglass wing tip fuel tanks RB2-100, Revision B, dated 1-10-63, (FEI Engineering Change Notice No. 1 dated 3-16-63) for tank serial numbers 187 and up, and fuel system in accordance with Extenders, Inc. Installation Instructions Manual FEI-35(V) – “Tip Tank Installation Type V Kit, “ Revision A, dated March 25, 1963, and Installation Drawing RB1-101, Revision E, dated 3-11-63 (FEI Engineering Change Notice No. 1 dated 3-16-63) and Bill of Materials RB1-101, Revision RB1-101, Revision 3-11-63. Limitations and Conditions (Continued) A. Complete installed empty weight increase is 23.7 pounds at 89.1 inches from datum-aft B. The center of gravity of wing tip fuel is 87 inches from datum-aft C. The following weight and center of gravity limitations are to be placarded in full view of the pilot as applicable to the particular Model: Allowable Gross Weight With Empty Fiberglass Tanks. All Weight in Excess of this Amount Must be in Wing Tip Fuel Model Rear C.G. at all Weights (Inches Aft of Datum) 2488 A35, B35 84.4 2538 C35 84.4 2563 D35 84.3 2563 E35 84.9 2588 F35 84.9 2613 G35 84.9 2738 H35, J35 84.7 2788 K35, N35 84.7 2738 35-33 84.7 2435 35 Normal 84.8 FAA FORM 8110-2-1(10-69) PAGE 3 of 5 PAGES 2010 35 Utility 84.6 FAA FORM 8110-2(10-68) PAGE 4 of 4 PAGES (Continuation Sheet) Number SA28EA Date: August 8, 1973, October 3, 1973, February 14, 1975 August 16, 2011 Supplemental Type Certificate Addendum No. SA28EA D. Configuration 1 Airplane Flight Manual Supplement dated April 30, 1962 is required for each Model (the 12 and 13.5 gal. wing tip tank installation not eligible with fuselage tanks). Configuration 2 Airplane Flight Manual Supplement dated March 29, 1963 is required for each Model when the RB1-100 wing tip tanks are modified in accordance with Flight Extenders, Inc. Service Bulletin No. 1” dated March 25, 1963. (The modified 14.7 gal wing tip tank installation not eligible with fuselage tanks). Beech Model 35 not eligible for this configuration. Configuration 3 Airplane Flight Manual Supplement dated April 2, 1963 is required for each Model (the 15 gal. wing tip tank installation not eligible with fuselage tanks). Beech Model 35 not eligible for this configuration. -END- ## Every issue (1) - August 16, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/28/a3/28a39e2df7d185c786c7d10142edafbce9e545627517b024c53150aae1dffe05) --- 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.