SDR WRLA200319

Service difficulty report · Cooler · Doug MD11F

Difficulty date
September 20, 2003
Submitted
November 19, 2003
Operation
Air carrier
Aircraft
N275WA
Make and model
Doug MD11F
Aircraft serial
48631
Engine
Pwa PW4462
Part
Cooler
Part number
471111204
Condition
Failed
Location
Nr 3 Engine
Stage of operation
CR
How discovered
O
Nature of condition
M, J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER TWO HRS INTO FLT LVL 2 HIGH OIL TEMP ON NR 3 ENG MAX TEMP 163 FOR APPROXIMATELY 3 MINUTES POWER REDUCED TO REDUCE TEMP. DEU'S WERE CHECKED FOR EXCEEDENCES NONE WERE NOTED. NR 3 ENGINE EEC CH A/B CHECKED FOR RELATED OIL SYTEM CONTROL OR SENSING FAULTS NONE RECORDED FOR LAST OR ANY 'LEGS' T/S PER FIM 79-00-03-3 WITH NO FAULTS NOTED. R7R NR 3 ENG FOC, REMOVED AND REPLACED NR 3 ENG FOC BYPASS VALVE AND SOLENOID ASSYS. REMOVED AND REPLACED NR 3 ENGINE SCAVENGE THERMOCOUPLE AND NR 3 BEARING TEMP BULB. GROUND OPERATION FOR OVER 30 MIN AT 1.2 EPR OIL TEMP 101C INSPECTED CHIP DETECTORS AND SERVICED ENGINE OIL TO FULL. REMOVED AND REPLACED FUEL OIL COOLER. (M)

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