What was found
(CAN) DURING ROUTINE MAINTENANCE A BLEED AIR LINE WAS FOUND CHAFING AN ENGINE TRUSS MOUNT TUBE. BLEED AIR LINE PN: 118-910033-93 TRUSS MOUNT PN: 129-910047-17. THE DAMAGE WAS FOUND TO BE WITHIN REPAIRABLE LIMITS IAW THE AIRCRAFT SRM. THE MOUNT WAS REPAIRED BY A QUALIFIED WELDER AND THE AIRCRAFT WAS RELEASED BACK INTO SERVICE. A FLEET CAMPAIGN WAS CONDUCTED AND ONE OTHER AIRCRAFT WAS FOUND WITH THE SAME PROBLEM WITH BOTH INCIDENTS ON THE LT ENGINE TRUSS MOUNT. (TC NR 20070228006)