Service difficulty report · Pump · Boeing 737990ER

Difficulty date
August 13, 2020
Submitted
August 14, 2020
Operation
Air carrier
Aircraft
N440AS
Make and model
Boeing 737990ER
Aircraft serial
41705
Aircraft time
26,289 hours, 8,454 cycles
Part
Pump
Part number
66087
Part serial
K1684
Condition
Failed
Location
Hyd System
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

#2 ENG HYDRAULIC PUMP FAILED (LOW PRESSURE LIGHT REMAINS ON). GROUNDED - YES. REMOVED & REPLACED #2 ENG EDP, REPLACED CASE DRAIN FILTER, PRESSURE MODULE FILTER & RETURN FILTER, FLUSHED HYD B SYSTEM REF B737-900 AMM 29-11-00-170-801. LEAK & OPS CHECKED GOOD. #2 ENG EDP PRESSURE IS AT 2980 PSI.