What was found
APU CAUGHT ON FIRE AT GATE. AFTER REMOVAL THE APU DISPLAYED VERY LITTLE EVIDENCE OF FIRE. THE FADEC CONTROL UNIT WAS CAPTURED FOR THE DOWN LOAD OF THE NON-VOLITILE MEMORY. DATA INDICATED NO UNUSUAL OCCURENCES DURING THE OPERATION OF THE ENGINE AT THE TIME DOF THE INCIDENT. TEST CELL RUNS TO DATE HAVE PROVEN NO ABNORMAL FUNCTIONING. FURTHER TESTING CONTINUES WITH INTRODUCTION OF THERORETICAL IMPLENTATIONS (INCLUDING SIMULATED TAIL WIND GUSTS) TO PIN POINT CAUSE. THESE ACTION WILL BE FOLLWED BY A COMPLETE DISASSEMBLY AND INSPECTION OF LRU'S. ESTIMATED COMPLETION DATED: JUNE 23, 03.