Service difficulty report · Pump · Boeing 737823

Difficulty date
November 14, 2022
Submitted
November 16, 2022
Operation
Air carrier
Aircraft
N972AN
Make and model
Boeing 737823
Aircraft serial
30097
Aircraft time
60,694 hours, 25,219 cycles
Part
Pump
Part number
849589
Part serial
MX626975
Condition
Leaking
Location
Hyd System
Part time
50,558 hours, 21,153 cycles
Stage of operation
AP
How discovered
O
Nature of condition
K, S
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: ON DOWNWIND AT DFW PLANE WENT INTO MANUAL REVERSION. SYSTEM B WENT TO 60%, SYSTEM A WAS NORMAL. GEAR WAS EXTENDED MANUAL AND LANDED WITH FLAP 5 ON THE FLAP HANDLE, INDICATOR SHOWED 5. BRAKE PRESSURE SHOWED 2500 APPROXIMATELY ON FINAL THEN CLOSE TO ZERO DURING ROLLOUT. LEAK FOUND AT NUMBER 2 ENGINE DRIVEN HYDRAULIC PUMP. REMOVED AND REPLACED ENGINE DRIVEN HYDRAULIC PUMP PER AMM 29-11-11.