Service difficulty report · Pump · Boeing 737724

Difficulty date
August 11, 2023
Submitted
August 14, 2023
Operation
Air carrier
Aircraft
N27724
Make and model
Boeing 737724
Aircraft serial
28791
Aircraft time
76,078 hours, 27,414 cycles
Part
Pump
Part number
849589
Part serial
MX755920
Condition
Unknown
Location
Nr 2 Hyd Sys
Part time
29,826 hours, 11,282 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

CREW REPORTED #2 ENG DRIVEN PUMP LO PRESSURE LIGHT ILLUMINATED, FOLLOWED QRH SHUT DOWN PUMP. QTY SHOWED 0. INSTALLED NEW #2 ENG HYD PUMP PER MM 29-11-11. PARTS USED: 29-2910-9-0003,QTY :1 1201795,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1201795 SN OFF 5920 PUMP, HYD ENG D OFF 29-2910-9-0003 5920 ON 29-2910-9-0003 6915. PUMP, HYD ELECT OFF 29-2910-9-0002 7992 ON 29-2910-9-0002 0536 PUMP, HYD ELECT OFF 29-2910-9-0002 7992 ON 0000 INSTALLED NEW ''B'' SYS ELEC HYD PUMP PER MM 29-11-21 PARTS USED: 29-2910-9-0002,QTY :1 1506085,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1506085 SN OFF 7992. CK''D ELEC ''B''CASE DRAIN FILTER, CK''D #2ENG CASE DRAIN FILTER, SVC''D ''B'' SYS HYD TO FULL. FOUND ''B'' SYS ACOUSTIC FILTER LEAKING, RPL''D FILTER PER MM 29-11-27. SEE LG PG''S 5424921 & 5424938 FOR PUMP CHANGES. FILTERS CK''D & RPL''D PER MM 29-11-41. & 29-11-51 PARTS USED: 29-2911-3-0031,QTY :1 29-2911-3-0052,QTY :1.