# STC SR02658LA - Type: Supplemental type certificate - Status: Current, Amended - Holder: Blackhawk Modifications Inc., United States - Description: Replacement of the original Pratt and Whitney PT6A-60A engines and propellers with Pratt and Whitney PT6A-67A engines and MT Propeller MTV-227-1-N-C-F-R(P)/CFR260-65b or Hartzell HC-E5A -3A/NC10245B propellers - Applied: October 3, 2016 - Status date: July 11, 2019 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 23, Part 36 - Data sheets: [TCDS A24CE](https://openairdocs.org/tcds/A24CE) - Certificate PDF: https://openairdocs.org/files/sha256/ab/d1/abd1708f796a1a43b56071a18fdb9ce8ac1063d61d269848bfec2a6dcb28d596 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/62F41680E31D91D3862588600051F283.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR02658LA ## ADs that name it (0) None. ## Approved models (4) - Textron Aviation Inc. 300 ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) - Textron Aviation Inc. 300LW ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) - Textron Aviation Inc. B300 ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) - Textron Aviation Inc. B300C ([TCDS A24CE](https://openairdocs.org/tcds/A24CE)) ## 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR02658LA This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47. FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 1 of 3 Part 23* of the Federal Aviation Regulations. Description of Type Design Change: Replacement of the original Pratt and Whitney PT6A -60A engines and propellers with Pratt and Whitney PT6A -67A engines and MT Propeller MTV -227- 1-N-C-F-R(P)/CFR260-65b or Hartzell HC -E5A -3A/NC10245B propellers in accordance with FAA approved Master Drawing List 200914-00 Rev. A dated May 23.2017 or later FAA approved revision. Instructions for Continued Airworthiness are contained in documents number 200914- 30, Revision IR dated May 2017, or later FAA accepted revision. (Continue on Page 3). Limitations and Conditions: The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. The approval of this modification applies to the above note d airplane model series only. 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. (Continue on Page 3). Date of Application: October 3, 2016 Date Reissued: Date of Issuance: August 17, 2017 Date Amended: June 6, 2018, July 11, 2019 By Direction of the Administrator Signature: Title: Aviation Safety Acting Manager, Technical & Administrative Support Section, Los Angeles ACO Branch This certificate issued to: BLACKHAWK MODIFICATIONS, INC. 7601 Karl May Drive Waco, Texas 76708 Original Product Type Certificate Number: A24CA Make: Textron Aviation Inc. Model: 300, 300LW, B300, B300C United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR02658LA This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47. FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 2 of 3 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR02658LA This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47. FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 3 of 3 (Continuation Sheet) Description of Type Design Change continued: The following Pilot’s Operation Handbook and FAA Approved Airplane Flight Manual Supplements, or later FAA Approved revision is required: Aircraft Model(s) Aircraft Maximum Takeoff Weight Document Number Revision Date B300, B300C 15,000 lbs. AFM 200914-20 IR August 14, 2017 B300, B300C 16,500 lbs. per TCDS A24CA Note 15 AFM 201612-09 IR May 16, 2018 B300, B300C 17,500 lbs. per TCDS A24CE Note 8 AFM 201612-08 IR May 16, 2018 300 14,000 lbs. AFM 201801-08 IR July 11, 2019 300LW 12,500 lbs. AFM 201801-09 IR July 11, 2019 − Dual aft body strakes installed per Raisbeck STC SA5151NM (or by aircraft OEM) is a prerequisite and must be previously installed or concurrently installed in combination with the PT6A-67A engines. − For aircraft incorporating Rockwell Collins Proline 21 avionics, Rockwell Collins Proline 21 Update per BHE & Associates, Ltd. STC SA11133SC is a prerequisite. It must be confirmed that the Proline 21 system is installed or updated to the proper engine markings for the PT68-67A engines. This note only applies to those aircraft utilizing Rockwell Collins Proline 21 avionics. − Aircraft approved for operation at MTOW of 16,500 pounds without extended range (ER) fuel tanks per TCDS A24CE Note 16 have not been shown to be compatible with this STC. − This modification has been shown to be compatible with the Rockwell Collins Proline 2 avionics system (B 300, B300C only). Certification Basis: The certification basis for this modification is the same as the basic aircraft as outlined in FAA TCDS A24C, with the following exception: Title 14 CFR Part 36, effective December 1, 1969, as amended through Amendment 36-30 (Amendment 36-31 for model 300, 300LW). -END- ## Every issue (1) - July 11, 2019: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ab/d1/abd1708f796a1a43b56071a18fdb9ce8ac1063d61d269848bfec2a6dcb28d596) --- 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.