Service difficulty report · Quick Disconnect · Boeing 737824

Difficulty date
October 15, 2025
Submitted
October 16, 2025
Operation
Air carrier
Aircraft
N77535
Make and model
Boeing 737824
Aircraft serial
62751
Aircraft time
28,634 hours, 10,533 cycles
Part
Quick Disconnect
Part number
849589
Part serial
MX771564
Condition
Leaking
Location
Hyd
Part time
10,737 hours, 4,331 cycles
Stage of operation
NR
How discovered
O
Nature of condition
K, J
Precautionary procedure
H

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

What was found

HYD PUMP LOW PRESSURE SYS B ENG 2. HYD PUMP SWITCH IS OFF. RAN ENG NR 2. HYD PUMP LOW PRESSURE LIGHT ON SYS B ENG 2 & NO PRESSURE IND. R & R ENG 2 EDP IAW AMM 29-11-11. ENG TEST IAW AMM 71-00-00. OPS CHECK FAILED. ENG 2 LOW PRESSURE LIGHT REMAINS ON, & SYS B HYD ENG PRESSURE IND DID NOT RISE TO 2800 PSI OR HIGHER. ON INSP FOUND BULKHEAD PRESSURE FITTING AT PYLON BROKEN & PRESSURE HOSE PARTIALLY DISCONNECTED. R & R NR 2 ENG STRUT PRESSURE DISCONNECT FITTING IAW FIM 29-30 TASK 813. PAR F STEP 5. ALSO REPLACED EDP PRESSURE QUICK DISCONNECT HOSE. CHECKED CASE DRAIN FILTER IAW AMM 29-11-51-000-801. FILLED B SYS HYD IAW AMM 29-00-00-900-801. RAN ENG FOR EDP PRESSURE CONFIRM. OPS CHKD GOOD. EDP PRODUCES 3000 PSI MIN. IAW AMM 20-11-00-860-804.