What was found
(CAN) 1 ENGINE OVERHEAT ILLUMINATED. SHUTDOWN NR 1 ENGINE BOTH EXTINGUISHER BOTTLES DISCHARGED. UPON INVESTIGATION MAINTENANCE FOUND NR 1 ENGINE, 13TH STAGE BLEED AIR AND MODULATING VALVE SENSE LINE, PN BACH7D0137DD, BRAIDED HOSE ASSY LEAKING BLEED AIR ONTO THE OVERHEAT/FIRE SENSOR SYS. THIS WAS CONFIRMED VIA THE AME FEELING THE LINE WITH THE APU BLEED AIR TURNED ON. THE SUBJECT LINE HAD NO APPARENT VISIBLE DAMAGE. NR 1 AND NR 2 ENGINE FIRE EXTINGUISHER BOTTLES REPLACED. PRSOV SENSOR LINE REPLACED, HIGH POWER RUN CARRIED OUT AT 1.66 EPR FOR 5 MIN. NO OVERHEAT LIGHT FAULT. ACFT RETURNED TO SERVICE.