Service difficulty report · Line · Boeing 7272M7

Difficulty date
November 12, 2003
Submitted
November 13, 2003
Operation
Air carrier
Aircraft
N750DH
Make and model
Boeing 7272M7
Aircraft serial
21951
Part
Line
Part number
BACH8C08NN0290
Condition
Failed
Location
Hyd System
Stage of operation
TX
How discovered
O
Nature of condition
K, J
Precautionary procedure
D

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

What was found

DURING TAXI OUT NR 2 B PUMP LOW PRESSURE LIGHT FLICKERED ON AND OFF. B SYSTEM QUANTITY DECREASED FROM FULL TO 1.5 GAL. NR 2 LOW PRESSURE LIGHT ILLUMINATED STEADY AND NR 1 LOW PRESSURE LIGHT BEGAN FLICKERING ON AND OFF WITH CORRESPONDING FLUCTUATION OF (B) SYSTEM PRESSURE. (B) SYSTEM OVER HEAT LIGHT ILLUMINATED AND TURNED BOTH PUMPS OFF OVER HEAT LIGHT EXTINGUISHED. REMOVED AND REPLACED TWO HYDRAULIC LINES FOR NR 2 B PUMP. OPS AND LEAK CHECKED NORMAL IAW M/M 20-10-12. P/N: BACH8CO8NN0290 AND P/N: BACH30AU06R0280.

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