F EEFF : ALL E E ECES Functional Test of the LP Fuel Shut Off ValvesInspection/Check of the IP Bleed Check ValveMinimum Idle CheckInspection/Check of the PS3 LineBorescope Inspection of the Booster Rotor Blades, Stages 2,3,4 and 5 through the Booster Inlet and Borescope Ports SO3 and SO5Inspection of the High Pressure Compressor Rotor AssemblyInspection/Check of the HPC Front Stator Assembly Borescope Inspection of the Combustion Chamber Liners, Dome Areas,HPT Nozzle Vanes and ShroudsBorescope Inspection of High-Pressure Turbine Nozzle Assembly Inspection of the Turbine Case Inspection of the Stage 1-3 Blades Inspection of the Stage 4 Blades Inspection of the Stage 2-4 Nozzle Segments Inspection of the Stage 1-4 Stationary Air SealsRemoval of the Fuel Pump and Filter Assembly Visual Inspection of the Fuel Filter CartridgeInstallation of the Fuel Pump and Filter AssemblyRemoval of the Hydromechanical Unit (HMU)Installation of the Hydromechanical Unit (HMU) Operational Test of the FADEC on the Ground (with Engine Motoring) Operational Test of the FADEC on the Ground (with Engine Non motoring)
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R AMM 79-00-00-281-002 Check of the Electrical Master Chip Detector for R Particles
3. Fault Confirmation
__________________
R A. Test
R CAUTION : IF THE ENGINE WAS NOT RESTARTED AFTER THE EVENT OR WITHIN 24
_______ R HRS, DO THE ENGINE DRY OUT PROCEDURE, OR FURTHER DAMAGE TO R ENGINE MAY OCCUR.
R (1) If the engine was successfully restarted after the event:
R - do the operational test of the FADEC 2A and 2B (with the engine non
R motoring) (Ref. AMM TASK 73-29-00-710-040).
R (2) If the engine could not restart after the event or no start attempt
R was done:
R - not applicable. No test must be attempted.
4. Fault Isolation
_______________
A. This ECAM warning is shown if the engine is running below minimum idle and N2 is less than 50% with the Master Lever set to ON.
CAUTION : WHEN THE "ENG/MASTER" LEVER IS IN THE "ON" POSITION, BE VERY
_______ CAREFUL NOT TO SET THE "ENG/MODE" SELECTOR SWITCH TO "CRANK" OR "IGN/START". IF YOU DO SET THE SELECTOR SWITCH TO ONE OF THESE POSITIONS, THE ENGINE WILL START. THERE IS THUS A RISK OF INJURY TO PERSONS AND OF DAMAGE TO EQUIPMENT.
- Do the trouble shooting related to the failure message(s) triggered (if any) during the fault confirmation test referred to in Para. 3.A.
- Do a check of the Post Flight Report (PFR), of the FADEC Last Leg Report and SMR/Class 3 Report for ECU, HMU, ALT, FMV, VSV, PS3 failure messages.
(1) If any failure message is shown:
- do the trouble shooting related to the failure message(s).
(2) If the fault occurred just after the engine start sequence or during taxi out or at first engine acceleration:
- do a check of correct operation of the low pressure fuel shut-off valve (Ref. AMM TASK 28-24-00-720-001),
- check that the drive mechanism of the valve is not broken.
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(3) If no failure message is found, or if at the time of the event, the crew reported symptoms such as stall, high EGT, sudden power loss, high vibration:
- make sure the fan rotates freely and smoothly,
- do a visual inspection of the LPT stage 4 rotor blades, R - do a check of the Master Magnetic Chip Detector for particles (Ref. R AMM TASK 79-00-00-281-002),
- examine the fuel filter cartridge, do a contamination check of the R fuel filter (Ref. AMM TASK 73-11-10-210-003),
- visually inspect the PS3 sense line to make sure that there is no leakage or blockage (Ref. AMM TASK 72-00-00-200-026),
- visually examine the VSV actuation system hardware, look for broken, loose or damaged hardware (Ref. AMM TASK 72-32-00-210-002). 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 發動機 ENGINE(4)
