Distribution Statement A – Approved for public release; distribution unlimited
USAF Center of Excellence for Airworthiness
DEPARTMENT OF THE AIR FORCE AC-18-02
Headquarters Air Force Life Cycle Management Center (AFLCMC) 26 OCT 2018
Engineering Directorate
Wright-Patterson AFB OH 45433-7101
AIRWORTHINESS CIRCULAR
USAF Maintenance & Operations Airworthiness Evaluations of
Contractor Owned & Contractor Operated Air Systems
PURPOSE:
This USAF airworthiness circular (AC) provides assistance on the airworthiness (AW)
assessment of Contractor Owned, Contractor Operated (COCO) aircraft operations and
maintenance procedures.
SCOPE:
This AC applies to all COCO aircraft used to support USAF unit mission requirements with or
without USAF personnel on board.
ATTACHMENTS:
1. Abbreviations and Acronyms
2. Airworthiness Technical Evaluator Checklist for Operator Inspection for Continued
Airworthiness
CANCELLATIONS:
Not applicable. This is the first issuance of this AC.
REFERENCED DOCUMENTS:
1. AWB-340, USAF Airworthiness Requirements for Contractor-Owned and Contractor
Operated Aircraft.
BACKGROUND:
Often times USAF units obtain the services of contractors to support and help fulfill unit mission
requirements. That support may include contractors providing, operating and supporting their
own (non-government owned) aircraft. Those aircraft may or may not be wholly or partially
FAA or US Military type certified. To ensure the safety of USAF personnel that may participate
in the operation and maintenance of those COCO aircraft while they perform contracted services
for the USG, AWB-340 requires the contracting organization complete an AW evaluation of
those aircraft.
