Service difficulty report · Pump · Boeing 7379

Difficulty date
February 2, 2025
Submitted
February 5, 2025
Operation
Air carrier
Aircraft
N77580
Make and model
Boeing 7379
Aircraft serial
67738
Aircraft time
2,035 hours, 636 cycles
Part
Pump
Part number
3033096100
Part serial
MX861336
Condition
Faulted
Location
Hyd Sys
Part time
2,025 hours, 633 cycles
Stage of operation
CR
How discovered
O
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

HYD PUMP B SIDE ELEC 1 LOW PRESS LIGHT ILLUMIN ATED IN FLIGHT UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. LOCKED LP. UNLOCKED. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. UPDATED MAA CODE FIX USING VENDOR MAA SCREEN PLEASE CONTACT TOMC BEFORE COMMENCING ANY WORK. LOCKED LP. UNLOCKING FOUND ELECTRIC SIDE OF PUMP AND CONNECTOR WARM TO TOUCH AND PUMP SIDE COLD. PUMP SEIZED. REPLACED B SYSTEM PUMP, REMOVED AND INSPECTED CASE DRAIN FILTER. NO CONTAMINATION NOTED. REPLACED CASE DRAIN FILTER WITH NEW. REF MM29-11-21 AND MM29-11-41. OPS AND LEAK CHECKED GOOD.

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