Service difficulty report · Unknown · Airbus A330223

Difficulty date
November 10, 2023
Submitted
November 13, 2023
Operation
Air carrier
Aircraft
N855NW
Make and model
Airbus A330223
Aircraft serial
0621
Aircraft time
75,968 hours, 9,700 cycles
Part
Unknown
Part number
UNKNOWN
Condition
Unknown
Location
Unknown
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

SHIP 3355 THE JET LUNCHES FOWARD A LITTLE WHEN HOLDING BRAKE PRESSURE THEN SETTING PARKING BRAKE. CORRECTIVE ACTION: T/S. PERFORMED FUNCTIONAL TEST OF THE BRAKE ACCUMULATOR SYSTEM. FUNCTIONAL TEST OK. OPS CHECK OF THE PARK-BRAKE MOTOR 1 AND 2 CHECK GOOD BUT WOULD ONLY 1350PSI PER TSM SHOULD REACH 2500+- PSI. R/R PARKING BRAKE CONTROL VALVE. PERFORMED BLEEDING OF THE ALTERNATE BRAKE SYSTEM. PERFORMED OPS TEST OF THE PARKING BRAKE AND ALTERNATE SYSTEM. BOTH GOOD. BITE TEST OF BSCU 1 AND 2 GOOD. NO FAULTS. NO LEAKS NOTED. (4864242)

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