STC ST04551AT

Title: (for) Robert Capezzuto Acting Manager, Atlanta ACO Branch Compliance and Airworthiness Division Aircraft Certification Service ST04551AT Chippewa Aerospace Inc.

490 Allied Dr.

Conway SC, 29526 Part 25 the Federal Aviation Regulations T00011AT Embraer EMB-135() and EMB-145() Installation of the Universal UNS-ILW FMS/GPS in accordance with Chippewa Aerospace Master Drawing List (MDL) No. 145-3462-01-0001, Rev. 1, Dated August 01, 2022, or later FAA approved revision.

This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane. (See continuation sheets 3-4.)

June 17, 2019 October 27, 2022 4

ST04551AT 4

ST04551AT Limitations and Conditions - continued:

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

Instructions for Continued Airworthiness (ICA), Chippewa Aerospace Inc.

Document No. 145-3462-01-0002, Rev. 1, Dated August 23, 2022, or later FAA approved 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 the Embraer EMB-135() and EMB-145() Series aircraft is as follows:

a. The type certification basis for Embraer EMB-135() and EMB-145() airplane is shown on TCDS T00011AT for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change since the reference date of application, June 17, 2019, is based upon part 25 as amended by Amendment 25-140. 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 latest amendment 25-0 through 25-140:

25.301, 25.303, 25.305, 25.307, 25.561, 25.571, 25.869, 25.899, 25.1301, 25.1307,

25.1309, 25.1316, 25.1317, 25.1353, 25.1431, 25.1525, 25.1529, 25.1541

Regulations at the amendment level in TCDS T00011AT:

25.1351 3 4

ST04551AT 14 CFR Part 26 Regulations Based on 14 CFR §21.101(g), applicable provision of 14 CFR part 26 are included in the certification basis. For any future 14 CFR part 26 amendments, the holder of this STC must demonstrate compliance with the applicable sections. As of the issuance date of this STC, compliance has been found for the following regulation: 14 CFR §26.11.

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