STC ST04514AT

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

ST04514AT Professional Aircraft Accessories Inc.

7035 Center Lane Titusville, FL 32780 Part 25 the Federal Aviation Regulations A21EA-1 Bombardier Inc.

CL-600-2B19 Installation of the Nose Wheel Steering Control Module Enclosure Kit and Spill Sleeve Shaft Housing in accordance with Master Drawing List, PAA-16650, Revision IR, dated July 1, 2020, or later FAA approved revision.

1. This STC is applicable to all serial numbers for Bombardier Inc., CL-600-2B19, series aircraft.

(Limitations and Conditions continued on sheet 3 of 4) November 21, 2019 March 1, 2021 Christina M. Underwood, Manager Atlanta Aircraft Certification Office 3

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

ST04514AT 3

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

ST04514AT Date of Issuance:

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

3. 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.

4. A copy of this STC must be included in the permanent record of the modified aircraft.

5. Instructions for Continued Airworthiness (ICA), Professional Aircraft Accessories ICA, PAA16650-101M, Original Revision, dated July 22, 2020 or later FAA accepted revision must be made available to the operator at the time of installation.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this change is as follows:

a. The certification basis for parts not changed or not affected by this change is in accordance with Type Certificate Data Sheet, A21EA-1.

b. The certification basis for parts changed or affected by the change since the reference date of application, November 21, 2019, is based upon part 25 as amended by Amendment 25-146. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA order 8110.48, the certification basis for this modification was determined to be:

Regulations at the amendment level in TCDS A21EA-1:

§§ 25.25, 25.27, 25.301, 25.303, 25.305, 25.601, 25.603, 25.605, 25.607, 25.609,

25.611, 25.613, 25.619, 25.625, 25.1301, 25.1309

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