SDR CALA2022111403134

Service difficulty report · Pump · Boeing 737824

Difficulty date: November 14, 2022
Submitted: November 16, 2022
Operation: Air carrier
Aircraft: N37255
Make and model: Boeing 737824
Aircraft serial: 30610
Aircraft time: 68,920 hours, 25,015 cycles
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Pump
Condition: Low Pressure
Location: Hyd System
Stage of operation: CL
How discovered: O
Nature of condition: O
Precautionary procedure: A

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

What was found

ENG 1 LOW PRESSURE LIGHT LIGHT ON DEBRIEF CREW ON ARRIVAL, A HYD SYSTEM ON #1 ENGINE SHOWS HYD PUMP ME# 29-2910-9-0003 AND INSTALL KIT ME# 29-2910-3-0012 UPON FILLING A SYSTEM HYD RESEVOIR. FLUID STREAMING OUT OF HYD QUANTITY 18%, LEAK FROM ENGINE TO INVESTIAGATE FURTHER. REPLACED ENG#1 EDP. INSTALLATION TEST REQ''D. REMOVED AND REPLACED #1 ENG HYDRAULIC PUMP. OPS AND LEACK CHECKS PASSED. REMOVED, REPLACED, AND FLUSHED "A" SYSTEM EDP CASE DRAIN AND SYSTEM FILTERS . OPS AND LEAK CHECKS PASSED.