Service difficulty report · Pump · Boeing 737823

Difficulty date
January 12, 2025
Submitted
January 25, 2025
Operation
Air carrier
Aircraft
N338RS
Make and model
Boeing 737823
Aircraft serial
44458
Aircraft time
13,583 hours, 5,038 cycles
Engine time
1,793 cycles
Part
Pump
Part number
849589
Part serial
MX640326
Condition
Failed
Location
Hyd System
Part time
50,243 hours, 21,300 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

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: FOLLOWING THE PREVIOUS WRITE UP REGARDING THE LOSS OF HYDRAULIC SYSTEM-B (AALA202501136707), AN ENGINE NUMBER 2 OIL FILTER BYPASS MESSAGE ILLUMINATED. AFTER RUNNING THIS ASSOCIATED QRH PROCEDURE FOLLOWING DISCONNECTING THE AUTO THROTTLE ONCE ENGINE 2 WAS CONFIRMED AND IDLED, THE ASSOCIATED OIL FILTER BYPASS LIGHT REMAINED ILLUMINATED. THE ENGINE NUMBER 2 WAS THEN SHUT DOWN PER QRH INSTRUCTION; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT SLC. PERFORMED 3 OIL FLUSHES (AALA202501130507), PER AMM 12-13-11-100-801. CHANGED OIL CARTRIDGE FILTER (AALA202501136707), PER AMM 79-21-07-400-801-G00. REMOVE AND REPLACED EDP- ENGINE DRIVEN PUMP (AALA202501247485), PER AMM 29-11-11-400-801.