STC ST04432CH

Part 25 of the Federal Aviation Regulations. (See Page 3 for complete certification basis)

Upgrade of a Honeywell LASEREF Inertial Reference System in accordance with Western Jet Aviation Master Data List 1037254, Revision (B), dated January 9, 2020 or later FAA approved revision.

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

2. FAA Approved Airplane Flight Manual Supplement document num ber 13531-2 Rev (A) dated December 19, 2019, or later FAA approved revision is a required part of this modification.

3. 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.

StandardAero Business Aviation Services, LLC 1200 North Airport Drive Springfield, IL 62707 A12EA Make: Gulfstream Aerospace Corporation Model: G-IV, GV

Date of application : October 1, 2019

Date of issuance: January 9, 2020 Date reissued :

(Signature) Dan Trigg, ODA Administrator StandardAero, Springfield, IL ODA-100079-CE

(Title)

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee)

(Number and street)

(City, State, and Zip code)

from (Name of grantor) (Print or type)

(Address of grantor)

(Number and street)

(City, State, and Zip code)

Signature of grantor (In ink):

Supplemental Type Certificate Number: ST04432CH Date of issuance: January 9, 2020 Date of amendment:

Date of reissue:

Certification Basis (continued)

Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the Gulfstream Aerospace Corporation G-IV, GV Upgrade of a Honeywell LASEREF Inertial Reference System is as follows:

a. The type certification basis for Gulfstream Aerospace Corporation G-IV, GV is shown on TCDS A12EA 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, October 1, 2019, is based upon TCDS A12EA. Based on 14 CFR § 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for this modification was determined to be:

Regulations at the amendment level in TCDS A12EA

25.1(a, b)(25-0), 25.301(a, b)(25-23), 25.303(25-23), 25.305(a, b)(25-77), 25.307(a)(25-72)

25.561(a-d)(25-64), 25.601(25-0), 25.603(a-c)(25-46), 25.605(a)(25-46), 25.607(a-c)(25-23)

25.609(a)(25-0), 25.611(25-23), 25.613(a, b)(25-72), 25.619(a-c)(25-23), 25.625(a)(25-72)

25.789(a)(25-46), 25.869(a(4))(25-72), 25.1301(a-d)(25-0), 25.1307(c)(25-72), 25.1309(a, b, d, g)(25-41)

25.1351(a)(25-72), 25.1353(a, b)(25-42), 25.1357(a-e)(25-0), 25.1431(a, c)(25-0), 25.1501(a)(25-42)

25.1519(25-0), 25.1529(25-54), 25.1581(a(2), d)(25-72), 25.1583(h)(25-72), 25.1585(a)(25-46).

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