# SDR DALA2023111309322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 10, 2023
- Submitted: November 13, 2023
- Operation: Air carrier
- Aircraft: [N855NW](https://openairdocs.org/aircraft/N855NW), registered now
- Make and model: Airbus A330-223
- Registry model: [Airbus A330-223](https://openairdocs.org/model/airbus-a330-223) (OpenAirDocs)
- Aircraft serial: 0621
- Aircraft time: 75,968 hours, 9,700 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2023111309322

## Discrepancy

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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