Service difficulty report · Limiter · Boeing 7377Q8

Difficulty date
July 31, 2023
Submitted
August 1, 2023
Operation
Air carrier
Aircraft
N7874B
Make and model
Boeing 7377Q8
Aircraft serial
29352
Aircraft time
55,230 hours, 30,441 cycles
Part
Limiter
Part number
UNKNOWN
Condition
Leaking
Location
Zn 100 Fus Lower
Stage of operation
CL
How discovered
9
Nature of condition
O
Precautionary procedure
D, O

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

What was found

B SYS HYD FAILURE FOUND PRESSURE DECK FLOW LIMITER ASSEMBLY LEAKING FROM UNION PACKING. CREW REPORTS IMMEDIATELY TURNED BOTH EDP & EMDP TO OFF POSITION. DUE TO HYDRAULIC QUANTITY DEPLETING.<[01] FOUND CRACKED FITTING; REMOVED AND REPLACED T/E FLAP FLOW LIMITER; AMM IAW 27-51-67. RAN ENGINES AND ALL FLIGHT CONTROLS; PER AMM 71-00-00; SERVICED HYDRAULIC QUANITY PER AMM 12-12-00; ALL SYSTEMS RESTORED.

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