# SDR DHL2002752001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 17, 2002
- Submitted: May 21, 2002
- Operation: Air carrier
- Aircraft: [N709AA](https://openairdocs.org/aircraft/N709AA), registered now
- Make and model: Boeing 727223
- Aircraft serial: 22466
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Metering Valve
- Condition: Failed
- Location: Rt Mlg
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DHL2002752001

## Discrepancy

DURING MAX POWER ASSURANCE RUN, PARKING BRAKE FAILS TO SECURE A/C EPR IS 1.4 AND ABOVE.  MLG BRAKES SAME AT POWER SETTING 1.6 AND ABOVE.  PERFORMED PARKING T/S+RIG CHECK IAW M/M 32-44-0.  OPS CHECK GOOD.  PERFORMED HYD BRAKE SYS T/S IAW 32-41-00.  FOUND RT MLG BRAKE METERING VALVE OUT OF ADJ.  BLEEDING TO RETURN SIDE UNABLE TO ADJ.  REMOVED AND REPLACED BRAKE METERING VALVE.

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