# SDR UALA2012122407382

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2012
- Submitted: December 24, 2012
- Operation: Air carrier
- Aircraft: [N797UA](https://openairdocs.org/aircraft/N797UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26924
- Aircraft time: 66,386 hours, 9,273 cycles
- Engine: Pwa PW40903
- System (JASC): [3830 · Waste Disposal System](https://openairdocs.org/jasc/3830)
- Part: Unknown
- Condition: Malfunctioned
- Location: Waste Disposal
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012122407382

## Discrepancy

ALL WASTE TANKS SHOW INVALID DATA ON CACP - CSCP.  TRIED CYCLING ZMU CBS, NO HELP.  SEE PREVIOUS HIS ZMU 3 HAS JUST BEEN REPLACED.  NO LEAKS ON SYSTEM AND ALL LAVS OPERATE NORMALLY.  DF PLACARD ON CSCP.  NOTE JUST PRIOR TO TRANSMITTING DEFERRAL ALL INDICATIONS RETURNED TO NORMAL.

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