Service difficulty report · Pump · Boeing 737724

Difficulty date
March 19, 2012
Submitted
March 19, 2012
Operation
Air carrier
Aircraft
N14731
Make and model
Boeing 737724
Aircraft serial
28799
Aircraft time
42,626 hours, 14,112 cycles
Part
Pump
Part number
849589
Part serial
MX674439
Condition
Leaking
Location
Nr 1 Engine
Part time
22,523 hours, 7,664 cycles
Stage of operation
CL
How discovered
O
Nature of condition
K
Precautionary procedure
A

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

What was found

THE NR 1 "ONE" ENGINE HYD LOW PRESS, LOSS OF SYSTEM FLUID TO 18 %. T/S PER FIM 29-30-00-810-812, FOUND 1 ENG EDP CASE DRAIN QUICK DISCONNECT NOT CONNECTED, CONNECTED QUICK DISCONNECT, R&R''D HYD PUMP & PRESSURE, SUPPLY AND CASE DRAIN HOSES PER MM 29-11-1 1, CHANGED "A" SYSTEM FILTERS: EDP & EMDP CASE DRAIN, PRESS MODULE, RETURN, ACOUSTIC, & PTU, FLUSHED "A" SYSTEM (CONTINUED) ROTABLE PARTS CHANGE WAS INDICATED - TT # 1527190 SN OFF 04439 PUMP, HYD ENG D OFF 29-2910-9-0003 4439 ON 29-2910-9-0003 3817 PER MM 29-11-00-170-801, REF N/R'S 4346812 AND 4346813 FOR DIPS ON FILTERS, SERVICED HYD FLUID, LEAK AND OPS CHECKS GOOD.