STC ST04809NY

IMPORT ST04809NY Conair Group Inc.

1510 Tower St Abbotsford, B.C.

V2T 6H5 CANADA Part 25 Title 14 Code of Federal Regulations A13NM De Havilland Aircaft of Canada Limited (Bombardier)

DHC-8-402

1. Conversion of a DHC-8-402 aircraft into a Airtanker for the aerial dispensing of liquids with the addition of an external retardant tank system operated under the restricted category per General Arrangement 3765B112100-103 in accordance with Conair Master Drawing List MDL 3765, Issue 6, Transport Canada (TCCA) approved July 17, 2020, or later TCCA approved revisions and Conair Service Bulletin 3765-011, Rev 3, dated December 15, 2022 or later TCCA approved revisions.

(See Description of Type Design Change Continued on Page 3 of 4)

1. The Airworthiness Limitations in Part 2 of Conair Maintenance Requirements Manual Supplement MRMS 3765, TCCA approved March 10, 2021 or later TCCA approved revisions is mandatory.

(See Limitations and Conditions Continued on Page 3 of 4) December 16, 2020 April 4, 2023 Anthony E. Gallo Manager, International Validation Branch (AIR-730) Compliance & Airworthiness Division Aircraft Certification Service (AIR) 4

IMPORT ST04809NY 4

IMPORT ST04809NY Date of Issuance: April 4, 2023

Description of Type Design Change (continued):

2. Operation must be in accordance with Conair Flight Manual Supplement FMS 3390, Revision 6, TCCA approved March 29, 2023, or later TCCA approved revisions; and Conair Flight Manual Supplement FMS 3795, Revision 2, TCCA approved February 3, 2023, or later TCCA approved revisions.

3. Operation of optional equipment must be in accordance with Conair Flight Manual Supplement FMS 3765-3 (avionics modifications), Revision 2, TCCA Approved February 3, 2023, or later TCCA approved revisions.

4. Maintenance must be in accordance with:

a. Conair Maintenance Requirements Manual Supplement MRMS 3765, Revision 3, dated January 27, 2021, or later TCCA accepted revisions, and

b. Conair Maintenance Manual Supplement MMS 3765, Revision 5, dated January 27, 2021, or later TCCA accepted revisions.

2. The aircraft must be operated in accordance with the limitations sections of the Airplane Flight Manual Supplements FMS 3390, FMS 3795 and FMS 3765-3 referenced in the Description of Type Design section of this STC.

3. The installer must determine whether this design change is compatible with previously approved modifications.

4. 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.

5. This STC is only applicable to serial numbers 4080 and subsequent for this make-model.

6. Restricted category aircraft may not be operated in a foreign country without the express written approval of that country.

(See Limitations and Conditions Continued on Page 4 of 4) 3 4

IMPORT ST04809NY Date of Issuance: April 4, 2023

7. This aircraft has not been shown to meet the requirements of the applicable comprehensive and detailed airworthiness code as provided by Annex 8 of the Convention on International Civil Aviation.

8. No passengers are permitted.

9. Flight into known icing conditions is prohibited.

10. Ditching is prohibited.

Certification Basis:

Based on Title 14 Code of Federal Regulations (14 CFR) §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the modified De Havilland Aircaft of Canada Limited Model DHC-8-402 is as follows:

(a) For parts not changed or not affected by the change: The existing type certification basis for the aircraft model as shown on the FAA Type Certificate Data Sheet A13NM.

(b) For parts changed or affected by the change: The existing type certificate basis for the aircraft model as shown on the FAA Type Certificate Data Sheet A13NM with the following exceptions:

i. 14 CFR 21.25(a)(1).

ii. 14 CFR Part 26, including Amendments 26-0 through 26-6.

iii. 14 CFR Part 36, including Amendments 36-1 through 36-31.

Compliance with the following requirements have not been demonstrated:

(a) 14 CFR §25.801. Ditching.

(b) 14 CFR §25.1419. Ice Protection.

This STC installs external retardant tanks for the aerial dispensing of liquids for the special purpose of Forest and Wildlife Conservation in Restricted Category in accordance with 14 CFR 21.25(b)(2).

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