What was found
UNDER FLOOR FIRE INDICATION. INSPECTED CABIN HEATER COMPARTMENT, NO INDICATION OF FIRE FOUND. REPLACED RIGHT BANK OF CO2 BOTTLES, BLOW-OUT DISC, RESET OUTFLOW VALVE, RESET CABIN SUPERCHARGER CLUTCHES AND REPLACED CABIN HEATER COMPARTMENT FIRE DETECTION TEST BUTTON AFTER TEST SWITCH WAS FOUND TO BE ERRATIC.