What was found
FLIGHT AV653, DURING TAKEOFF ROLL, AFTER APPLICATION OF TAKEOFF THRUST, AN APU FIRE ECAM IND TRIGGERED, FLT CREW PERFORMED A LOW-SPEED ATO IAW OPS & SAFETY PROCEDURES. ECAM MESSAGE & RED APU FIRE WARNING LIGHT EXTINGUISHED, AS A PRECAUTION, AIRPORT FIRE SERVICES REQUESTED, FIRE DEPART REPORTED NO VISIBLE ABNORMALITIES FROM AN EXTERNAL INSP. ACFT RETURNED TO GATE. MX CONDUCTED A PHYSICAL INSP OF APU & REQUIRED SYS TESTS. INSPECT PERFORMED IAW AMM 49-00-00-200-003-A01, NO EVIDENCE OF FIRE OR DAMAGE. APU DEFERRED IAW MEL 49-10-01-1A. FLT RE-DISPATCHED & COMPLETED WITHOUT INCIDENT. MEL ITEM CLOSED AFTER TROUBLESHOOTING IAW TSM 26-22-00-810-801-A, SUB-TASK 26-22-00-710-050-A. PERFORMED APU FIRE-EXTINGUISHING LOOP, SQUIB IAW AMM 26-22-00-710-001. APU OP TESTED IAW AMM 49-00-00-710-010. ALL TESTS GOOD. SYSTEM RTS.