STC ST04525AT

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificate issued to:

ST04525AT SKH Aerospace, LLC.

1335 Lynah Ave, Suite 119 Garden City, GA 31408 .

the Federal Aviation Regulation T00011AT Make: Original Product Type Certificate Number:

EMBRAER S.A.

EMB-135LR Installation of the Universal Avionics Flight Management System (FMS) Model No. UNS-1LW in accordance with SKH Aerospace Master Data List (MDL) 3400-1785 Revision D, dated October 4, 2021, or later FAA approved revision.

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

continue on page 3

April 5, 2021 October 20, 2021 By Direction of the Administrator Signature:

(for) Christina M. Underwood Atlanta Aircraft Certification Branch

ST04525AT

ST04525AT Limitations and Conditions - cont.:

2. FAA Approved Airplane Flight Manual Supplement, Doc No. SKH2021-1033, Revision (-), dated October 14, 2021, is required on board the modified aircraft.

3. FAA Approved Instructions for Continued Airworthiness, Document No.

SKH2021-1032, Revision (-), dated July 8, 2021, or later FAA Approved revision is required.

4. 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.

ST04525AT Certification Basis:

The certification basis for the changed Embraer EMB-135LR aircraft as described in this certificate is as follows:

a. The type certification basis for the Embraer EMB-135LR aircraft is shown on TCDS T00011AT for parts not changed or not affected by this change.

b. The certification basis for the parts changed or affected by this change since the reference date of application, April 5, 2021, is shown on TCDS T00011AT. The applicant has complied with 14 CFR Part 25 as amended by Amendment 25-1 through 25-97 or later as specified by the sections listed below, and by 14 CFR Part 26 as amended by Amendment 26-1.

Regulations as shown on TCDS T00011AT [Amendment 25-0 through 25-97] Part 25 including Amendments through 25-84; 25-85; FAR 25.1517 from 25-86; 25-88;

25-90; FAR 25.331, 25.335(b)(2), 25.345, 25.351, 25.363, 25.371, 25.415, 25.491,

25.499 and 25.561 from 25-91; 25-93; FAR 25.807 from 25-94; and 25-97.

Regulations at a later amendment of 14 CFR Part 25 None Special Conditions Special Condition No. 25-673-SC, Non-Rechargeable Lithium Batteries, effective to design changes applied for after May 16, 2017.

14 CFR Part 26 Regulations Based on 14 CFR § 21.101(g), applicable provisions of 14 CFR Part 26 are included in the certification basis. For any future 14 CFR Part 26 amendments, the holder of this STC, compliance has been found for the following regulations: 14 CFR §§ 26.11(c) [Amdt. No. 26-0]; 26.47(c) [Amdt No. 26-1]. This modification does not affect or create fatigue critical baseline structure.

ST04525AT

ST04525AT

ST04525AT

ST04525AT