Service difficulty report · Gasket · Boeing 76734AF

Difficulty date
July 1, 2025
Submitted
July 1, 2025
Operation
Air carrier
Aircraft
N354UP
Make and model
Boeing 76734AF
Aircraft serial
37862
Aircraft time
29,505 hours, 10,722 cycles
Part
Gasket
Part number
0690001971
Condition
Leaking
Location
Zone 100
Stage of operation
CL
How discovered
O
Nature of condition
K, B
Precautionary procedure
A

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

What was found

EMERGENCY DECLARED, LEFT HYD QTY ICAS MESSAGE QTY AT.45. PILOT STATED IT DID GO TO ZERO. REMOVED AND REPLACED YDS ELECTROHYDRAULIC SERVOVALVE AND SOLENOID VALVES GASKET PLATES AND PACKINGS PER AMM 22-21-03. OPS AND LEAK CHECK GOOD PER AMM 22-21-03. NO LEAKS NOTED FROM TAIL AT THIS TIME.

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