Service difficulty report · Pump · Boeing 74746NF

Difficulty date
April 7, 2012
Submitted
April 9, 2012
Operation
Air carrier
Aircraft
N450PA
Make and model
Boeing 74746NF
Aircraft serial
30808
Aircraft time
49,955 hours, 8,184 cycles
Part
Pump
Part number
6506606
Part serial
2420787
Condition
Overheated
Location
Hyd System
Stage of operation
CR
How discovered
O
Nature of condition
M, K, J
Precautionary procedure
H, A

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

What was found

NR 1 HYDRAULIC SYSTEM OVERHEAT USING EDP, ADP TURNED ON, ALL FLUID EVENTUALLY LOST FROM NR 1. FOUND EDP TO BE OVERHEATED, INOPERATIVE AND LEAKING. REPLACED EDP AND CORRELATED FILTERS.

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