Service difficulty report · Seal · Boeing 737823

Difficulty date
September 14, 2025
Submitted
September 15, 2025
Operation
Air carrier
Aircraft
N886NN
Make and model
Boeing 737823
Aircraft serial
33223
Aircraft time
39,956 hours, 17,174 cycles
Part
Seal
Condition
Failed
Location
Hyd Pump
Stage of operation
CR
How discovered
O
Nature of condition
K, 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: HYDRAULIC PRESSURE DURING FLIGHT; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT DTW. NUMBER 2 ENGINE DRIVEN HYDRAULIC PUMP DRIVE PAD SEAL ON THE GEAR BOX REQUIRES REPLACEMENT DUE TO PUMP FAILURE AND HEAT. REPLACED NUMBER 2 ENGINE DRIVEN HYDRAULIC PUMP DRIVE PAD SEAL ON THE GEAR BOX. PER AMM 72-60-00, LEAK CHECKS GOOD.