SDR P5CA2015090700132

Service difficulty report · Pump · Boeing 74787UF

Difficulty date: September 6, 2015
Submitted: September 8, 2015
Operation: Air carrier
Aircraft: N851GT
Make and model: Boeing 74787UF
Aircraft serial: 37565
Aircraft time: 12,769 hours, 2,284 cycles
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Pump
Part number: 972952
Part serial: MX745481
Condition: Leaking
Location: Hyd System
Part time: 11,122 hours, 2,019 cycles
Stage of operation: CL
How discovered: O
Nature of condition: K, J
Precautionary procedure: A

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

What was found

NR 4 HYDRAULIC SYSTEM FAILED APPROACHING LEVEL AT 11,000 FT. ACCOMPLISHED CHECKLIST. SHUTDOWN NR 4 ENGINE DRIVEN PUMP. FOUND NR 4 EDP LEAKING FROM PRESSURE SENSOR AND CASE DRAIN. TRANSFER TO MDDR 59865, MEL 29-11-01-02B. PUMP REMOVED AND PLATE INSTALLED IAW AMM 29-11-15 AND DDG PROCEDURES.

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