STC SR02591LA

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SRO2591LA This certificate issued to: Precision Heli-Support, LLC 4702 E. Fighter Aces Dr., Mesa, Arizona 85215 Part 27 of the Federal Aviation Regulations.

Original Product Type Certificate Number : H3WE Make MD Helicopters Inc. (MDHI) Abodel 369Н/HM/HE/HS/D/E/F/FF Description of Type Design Change: Installation of software upgrade to existing Garmin GTX330/330D/33H/33DH Transponders for Version 2 ADS-B Out in the MD Helicopter in accordance with Master Data List PHP-MDL-484, Revision N/C, dated March 18, 2016 or later FAA-Approved revision.

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 rotorcraft. The installer must determine whether this design change is compatible with previously approved modifications. The approval of this modification applies to the above-noted aircraft model series only. If the holder agrees to permit to 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: February 23, 2015 Date Reissued: January 8, 2018 Date of Issuance: June 8, 2016 Date Amended:

FEDERAL AVIATION By Direction of the Administrator (Signature) TOMNISTRATO Manager, Systems & Equipment Section, Los Angeles Aircraft Certification Office Branch (Title)

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U.S. GPO 1987-763-289