Parameters monitored by Quick 1.Vibration (5 Hz) Up to 4 vibration channels usually configured to monitor the same vibration transducer at different frequency ranges (500, 1250Hz, 2.5, 5, 10, 40, 80 kHz).Up to 4 vibration channels usually configured to monitor the same vibration transducer at different frequency ranges (500, 1250Hz, 2.5, 5, 10, 40, 80 kHz). The 3 shaft speeds and a once-per-rev tachometer signal to give phase.The 3 shaft speeds and a once-per-rev tachometer signal to give phase.

Parameters monitored by Quick 1.Performance Parameters (20-40Hz) Flight condition : Altitude, Mach number Fuel : Fuel Metering Valve position, Demanded Fuel flow, Fuel flow meter Outputs : Exhaust Pressure ratio, shaft speeds, Turbine gas temp. Oil System : Oil Pressure, temperature, quantity Control system : Demanded Bleed valve positions, Variable stator vane position, Control loop flag, Throttle angle Fault detection : Magnetic Chip detector, Surge detect Temperatures & Pressures : Ambient (20), IP (25), HP (30), By-pass Pressure (16), Exhaust Pressure, Turbine Air temp Others

Features, Symptoms & Events 1.Features Occurrences of diagnostic interest. E.g. step change in vibration levelOccurrences of diagnostic interest. E.g. step change in vibration level

Features, Symptoms & Events 1.Features Occurrences of diagnostic interest. E.g. step change in vibration levelOccurrences of diagnostic interest. E.g. step change in vibration level 2.Symptoms A feature occurring at a specific engine condition may be a symptom of a known fault.A feature occurring at a specific engine condition may be a symptom of a known fault.

Features, Symptoms & Events 3.Events The co-occurrence of several symptoms leads to the diagnosis of an eventThe co-occurrence of several symptoms leads to the diagnosis of an event

Features – Symptoms - Diagnosis Diagnosis number 11 Diagnosis 1 "Bowed Rotor Start" HP_SHAFT Diagnosis 2 "Bird Strike" LP_COMP Diagnosis 3 "IP Lockplate" IP_COMP Diagnosis 4 "LP Out of Balance" LP_COMP Diagnosis 5 "IP Out of Balance" IP_SHAFT Diagnosis 6 "HP Out of Balance" HP_SHAFT Diagnosis 7 "LP Mass redistribution" LP_COMP Diagnosis 8 "IP Mass redistribution" IP_COMP Diagnosis 9 "IP Failure" IP_COMP Diagnosis 10 "HP Mass redistribution" HP_COMP Diagnosis 11 "Radial Drive Shaft bearing" HP_SHAFT List of known events defined in a config file :

Features – Symptoms - Diagnosis Symptom 1 of diagnosis 1 ; step_change 1h condition ACCEL STARTUP ; Symptom 2 of diagnosis 1 ; climit_detector 1h condition ACCEL STARTUP ; List of Symptoms per fault :