STC ST04423AT

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder.

FAA Form 8110-2 (5/14) Page 1 of 3

Number: ST04423AT

This certificate issued to: U. S. Department of Agriculture – Forest Service 3833 South Development Avenue Boise, Idaho 83705

Part 25 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: A41EU Make: Short Brothers Model: SD3-60 SHERPA

Description of Type Design Change: Modification of Short Brothers SD3-60 Sherpa to include incorporation of OEM static line and support structure, paratroop door modification, seating configuration, door edge protector and battery vent tube in accordance with Aeronautica, LLC Master Drawing List AO25CN25001, Revision A, dated June 2, 2017, or later FAA-approved revisions.

Limitations and Conditions: This modification should not be incorporated in any aircraft unless it is determined that the interrelationship between this modification and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft.

Date of Application: November 10, 2015 Date Reissued: June 22, 2018 Date of Issuance: May 2, 2018 Date Amended:

Signature

Title Christina M. Underwood Manager, Atlanta ACO Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller.

FAA Form 8110-2 (5/14) Page 2 of 3

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST04423AT

Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor to alter an aircraft, aircraft engine, or propeller.

FAA Form 8110-2 (5/14) Page 3 of 3

Date of Issuance: May 2, 2018 Date Amended:

1. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission.

2. For maintenance and inspections, apply Aeronautica, LLC Instructions for Continued Airworthiness AR16506, Revision A, dated January 10, 2018, or later FAA accepted revisions.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, this is NOT considered a significant project, for the Short Brothers SD3-60 Sherpa, the Certification Basis is as follows:

 The type certification basis for Short Brothers SD3-60 Sherpa airplanes is shown on TCDS A41EU for parts not changed or not affected by the change.

 The certification basis for parts changed or affected by the change since the reference date of application, November 10, 2015, is based upon part 25 as amended by amendment 25-1 through 25-34, plus FAR 25-1351 as amended by amendment

25-41. FAA Special Conditions No. 25-70-EU-22 dated June 8,1976 with amendment No. 1 thereto dated June 11, 1976.

FAR Part 36, effective December 1, 1969 including amendments 36-1 through 36-12. SFAR 27 effective January 1, 1975.

Based on 14 CFR §§ 21.115 and 21.101, this is NOT considered a significant project, the certification basis for this modification was determined to be:

Regulations at an intermediate amendment:

25.307 Amendment 25-54

25.603 Amendment 25-46

25.605 Amendment 25-46

25.613 Amendment 25-46

25.785(d)(i) Amendment 25-51

25.803(a) Amendment 25-46

25.807(c) Amendment 25-55

25.809(a)(b)(c)(d) Amendment 25-47

25.811(a)(d.2)(e.1) Amendment 25-46

Regulations at the amendment level in TCDS A41EU:

25.23, 25.301, 25.303, 25.305, 25.571, 25.601, 25.607, 25.609, 25.619, 25.625, 25.783(e), 25.783(h.2), 25.1529, 25.1541,

25.1557(c), 25.1557(d)0

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