What was found
ACFT IS IN FOR A C-CHECK INSPECTION. INSPECTION FOUND THE VENTRAL TANK CHAFE AT A PREVIOUS LOWER SKIN PATCH BETWEEN TANK DRAINS. THE OLD DOUBLER HAS BEEN REMOVED AND BLENDED SMOOTH, FABRICATED A NEW DOUBLER FOLLOWING THE INSTRUCTIONS OUTLINED ON EC 2015-145-120319-A, ALSO, INITIATED A DETAILED INSPECTION EVERY 30,000 CYCLES. OPS AND LEAK CHECKS WERE GOOD AND WILL BE RELEASED AT THE END OF THE CHECK. ALL WORK WAS ACCOMPLISHED IAW WITH EC 2810-01082.