What was found
(CAN) CUSTOMER REPORTED AN IFSD OF THE LT ENGINE DURING CLIMB THROUGH 3500FT, INITIAL REPORT IS THAT THE ENGINE MADE A LOUD NOISE, FOLLOWED BY A VERY SHORT SPIKE IN FUEL FLOW, WF, AND SUDDEN DROP IN TORQUE, TQ, AND COMPRESSOR SPED, NG. THE ITT INCREASED TO A MAX OF 865 DEGREE C AND WAS ABOVE 800 DEGREE C FOR APPROXIMATELY 9 SECONDS. CUSTOMER HAS REPORTED THAT THERE IS NO RESTRICTION IN THE PROPELLER AND THE COMPRESSOR ROTATION SEEMS NORMAL. CUSTOMER HAS CONDUCTED A BOROSCOPE FROM A SINGLE NOZZLE POINT WITH NO EVIDENCE OF CT FAILURE. THERE IS NO OBVIOUS SIGNS OF DAMAGE, EXTERNAL, TO THE ENGINE AT THIS POINT. TROUBLESHOOTING IS ONGOING.