STC SA00139IB

IMPORT SA00139IB Bartel Mechanical and Aerospace 116 Kokomo Lane La Broquerie West, Manitoba Canada R0A 0W1 Part 23 Title 14 Code of Federal Regulations A-815 Viking Air Limited DHC-3 (Otter)

1. Installation of Ski Shackles must be in accordance with AeroMod Consulting Inc. Installation Instructions & Maintenance Manual Supplement ACI-3048-MMS, Rev. IR, Transport Canada Civil Aviation (TCCA) approved February 11, 2020, or later TCCA approved revision.

2. Maintenance must be in accordance with AeroMod Consulting Inc. Installation Instructions & Maintenance Manual Supplement ACI-3048-MMS, Rev. IR, TCCA accepted February 11, 2020 or later TCCA accepted revision.

(See continuation sheet 3 or ...sheets 3 through 5)

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

(See continuation sheet 3 or ...sheets 3 through 5) June 19, 2023 August 29, 2023

Anthony E. Gallo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3

IMPORT SA00139IB SA00139IB 3

IMPORT SA00139IB Date of Issuance: August 29, 2023

Description of Type Design Change (continued):

3. Manufacturing of Ski Shackles must be in accordance with AeroMod Consulting Inc.

Modification Data Summary ACI-3048-MDS, Rev. IR, TCCA approved February 11, 2020, or later TCCA approved revision.

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

3. This STC is applicable to all serial numbers for this Make-Model.

4. Installation of Harbour Air Ltd. Heavy Lift Struts in accordance with STC SA02711NY is a prerequisite for the Ski Shackle installation.

5. Installation of retractable skis in accordance with DeHavilland drawing C3-US-100 (Ref.

TCDS A-815, Approved Equipment Item 300b) is a prerequisite for the Ski Shackle installation.

6. Compliance with the Transport Canada approved limitations section of Harbour Air Ltd.

Instructions for Continued Airworthiness BDL0804-ICA, Rev. E, dated January 28, 2019, or later TCCA approved revision remains mandatory (10,000 hour service life limit for the strut attach bolts).

Certification Basis:

Based on title 14 Code of Federal Regulations (CFR) 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48, the type certification basis for the modified Viking Air Limited DHC-3 is as follows:

a. The type certification basis for the Viking Air Limited DHC-3 as shown on Type Certificate Data Sheet (TCDS) A-815 for parts not changed or not affected by the change.

b. The type certification basis for the Viking Air Limited DHC-3 for parts changed or affected by the change is TCDS A-815 with the following exceptions:

14 CFR FAR 23, Amendment 23-0, plus FAR 23.1529, Amendment 23-26.

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