Service difficulty report · Drain Valve · Boeing 777323ER

Difficulty date
April 22, 2024
Submitted
April 24, 2024
Operation
Air carrier
Aircraft
N722AN
Make and model
Boeing 777323ER
Aircraft serial
31547
Aircraft time
43,013 hours, 5,053 cycles
Part
Drain Valve
Part number
UNKNOWN
Condition
Inoperative
Location
Hyd System
Stage of operation
CR
How discovered
V
Nature of condition
O
Precautionary procedure
A

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

What was found

INROUTE LOST LEFT HYDRAULIC QUANITY & PRESSURE. AIRCRAFT DIVERTED TO HNL AND DECLARED AN EMERGENCY LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE CASE DRAIN CHECK VALVE IAW AMM 29-11-05.