Service difficulty report · B-Nut · Boeing 757232

Difficulty date
January 4, 2023
Submitted
January 9, 2023
Operation
Air carrier
Aircraft
N673DL
Make and model
Boeing 757232
Aircraft serial
25978
Aircraft time
90,491 hours, 41,528 cycles
Part
B-Nut
Condition
Leaking
Location
Hyd System
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

SHIP 0673 - MISC/DE - DUE TO L HYD SYS FLUID LOSS NORMAL GEAR EXTENSION. CORRECTIVE ACTION: B-NUT LEAKING FROM THE LEFT THRUST REV VALVE DUE TO DAMAGED O-RING. REPLACED O-RING AND PERFORMED LEAK CHECK. REPLACED EDP, ACMP, AND PTU HYD FILTERS. C/W NO-GO PROCEDURES.