isochronal inspection

Staff Sgt. Matt Washburn, 434th Maintenance Squadron aircraft mechanic performs maintenance on the wing of a KC-135R Stratotanker at Grissom Air Reserve Base, Ind., March 1, 2017. The maintenance was part of an isochronal inspection, in which every system on the aircraft is inspected for damage and signs of wear once every two years. (U.S. Air Force photo/Senior Airman Harrison Withrow)

PHOTO BY: Senior Airman Harrison Withrow
VIRIN: 170301-F-UE704-0006.JPG
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