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Read the DMU Exceedance Report, the DMC Max Value Report and/or the ECU data by the Menu Mode Specific Data Report (if available) to find the maximum EGT value that was recorded during the event, as well as the amount of time of the overtemperature condition. If none of these reports are available, get the data from the AIDS or DFDR.
R (1) Follow these instructions for the applicable power range where the
R engine overtemperature occurred:
R (a) Takeoff
R (Ref. Fig. 604/TASK 72-00-00-991-323)
R NOTE : Consider EGT indicated max value and physical max time
____ R value, as printed out from PWR SETTING MAX VALUES report.
R 1_ Find if there was an Area A, B or C takeoff exceedance.
R (b) Climb, Cruise or Max Continuous
R (Ref. Fig. 605/TASK 72-00-00-991-324)
R NOTE : Consider EGT indicated max value and physical max time
____ R value, as printed out from PWR SETTING MAX VALUES report.
R NOTE : If the flight crew has logged an EGT indication above the____
R 915 degrees C climb, cruise, or max continuous power
R limit, maintenance personnel should be concerned with the
R total time the engine was at 915 degrees C or above
R regardless of the time that has elapsed since takeoff
R power was reduced to climb, cruise or max continuous
R power.
R (2) Area A: (Unusual Operation)
(a) If the EGT overtemperature condition is identified to be caused by not having sufficient engine warm-up before take off:
1 No troubleshooting is necessary.
_ NOTE : Warm-up time is not sufficient if engine is as follows:
____ - shut down for more than 4 hours - operated at idle or above for less than 15 minutes
(b) If the EGT overtemperature condition is identified to be caused by engine deterioration (low remaining EGT margin), or engine bleed selected during take off after throttle push:
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R R Operational EGT (T495) Limits at Take Off Figure 604/TASK 72-00-00-991-323
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R Operational EGT (T495) Limits at Climb, Cruise or MAX Continuous R Figure 605/TASK 72-00-00-991-324
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1 No troubleshooting is necessary.
_
(c) If the cause of the EGT overtemperature condition cannot be identified by the above, or you think it could have been caused by FOD or engine hardware failure:
1 Do troubleshooting for EGT OVERLIMIT (Ref. TSM 77 PB 101).
_
2 Troubleshooting can be deferred for five overtemperature
_ conditions in Area A but can not go over 25 cycles after the first overtemperature condition.
NOTE : There are known engine malfunctions that can lead to an
____ EGT overtemperature condition and thus a Class 1 ECAM warning message. These malfunctions require troubleshooting prior to engine operation. (Example: "VBV ACT, HMU ", "CHECK HOT AIR LEAKS", "NAC TEMP SENSOR", etc.).
(d) You can have a maximum of 20 overtemperature conditions in Area A, before engine removal is required.
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