Certificate of RegistrationThis certifies that the Quality Management System of

Columbia Manufacturing, Inc.165 Route 66 East

Columbia, Connecticut, 06237, United States

has been assessed by NSF-ISR and found to be in conformance to the following standard(s):

AS9100D with ISO 9001:2015*Audited in accordance with AS9104/1:2012 Requirements for Aviation, Space, and Defense Quality Management System Certification Programs.

NSF-ISR is accredited under the Americas Aerospace Quality Group Registration Management Committee.

Scope of Registration:Supplier of precision machined parts and sheet metal fabrications for the aerospace industries (including OEM & MRO activities). Special processes

include: non-conventional machining, welding, brazing, heat treating, and non-destructive testing

Carl Blazik,Director, Technical Operations &Business Units, NSF-ISR, Ltd.

Certificate Number: C0473086-AS1Certificate Decision/Re-Issue Date: 01-MAR-2019Certificate Issue Date: 03-AUG-2018Expiration Date *: 02-AUG-2021