Service difficulty report · Hydraulic System · Boeing 78710

Difficulty date
March 27, 2023
Submitted
March 27, 2023
Operation
Air carrier
Aircraft
N16009
Make and model
Boeing 78710
Aircraft serial
40938
Aircraft time
15,819 hours, 2,289 cycles
Part
Hydraulic System
Part number
NA
Condition
Unknown
Location
L Mlg
Stage of operation
UK
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

SEMI LEVER GEAR LOCK EITHER THE LEFT OR RIGHT SEMI LEVER GEAR (SLG) DOES NOT MAINTAIN LOCKUP PRESSURE WHEN COMMANDED OR SHOWS LOCKUP PRESSURE WHEN NO T COMMANDED DUE TO MECHANICAL VALVE FAILURE, BOTH LOCKUP VALVE C ONTROL SOLENOIDS FAILED, OR BOTH LOCKUP VALVE CONTROL SOLENOID DEFFERED IAW MEL 3230C MAINT PROC PERFORMED IAW DDG 32-30-03 ITEM APPROVED DISPATCH DESK: 64 NAME: SL DATE: 18-MAR-23- MEL APPROVED. 3230C LEVER GEAR HYDRAULIC PRESSURE SENSOR, M3232150 P/N 10-3232-3-0003. MAINTENANCE MESSAGE 32-55008 - FAULT ISOLATION REFERENCE: DMC-B787-A-32-30-F2-75A-421A-A.NEED TO REPLACE THE LEFT SEMI REPLACED LH MAIN LADING GEAR SEMI LEVER GEAR HYD STRUT HDY PRESSURE TRANSDUCER IN REF AMM32-32-18-02A-520A, OPS CHECK GOOD

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