As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YYC - FALSE FIRE WARNING, CREW REPORTED THAT RECEIVED AN APU FIRE WARNING INDICATION, CREW DISCHARGED BOTTLE. NO DAMAGE WAS NOTED ON WALKAROUND. DEFERRED THE APU FIRE DETECTION LOOPS AND APU FIRE EXTINGUISHER SYSTEM. REPORTED THROUGH INFO ONLY THAT THERE WERE CHAFED WIRES IN THE APU BAY. BOTH SYSTEMS STILL ON DEFERRAL. MAINTENANCE CLEARED DEFERRAL ON 03/14/06. FOUND APU EGT HARNESS CHAFFED. ALSO REPLACED PLUGS ON CONNECTOR M334. OPERATIONAL CHECKS WERE GOOD. PART INFO UPDATED.