What was found
ON TAKEOFF ROLL OUT OF SJU, THE LEFT ENGINE EGT AND TORQUE INDICATIONS BECAME ERRATIC. THE PILOT ABORTED THE TAKEOFF AND ASKED FOR CLEARANCE TO A SECLUDED AREA TO PERFORM AN ENG RUNUP CHECK. DURING THE RUNUP CHECK THE PILOT TURNED OFF THE LT SRL AND THE LT ENGINE EGT AND TQ INDICATIONS STABILIZED. THE PILOT RETURNED TO MX WITH THE A/C. MX DEFERRED THE LT SRL SYS PER MEL 77-2 AND PERFORMED A GROUND RUNUP CHECK TO VERIFY THE SYSTEM OPERATED NORM WITH THE SRL DEFERRED. THE A/C WAS RELEASED FOR SERV. MX CLEARED THE DMI AFTER PERFORMING 6 TAKEOFF POWER CHECKS WITHOUT ANY PROBLEMS. THE PROBLEM HAS NOT RETURNED. (M)