# SDR CALA2011100400639

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2011
- Submitted: October 4, 2011
- Operation: Air carrier
- Aircraft: [N78005](https://openairdocs.org/aircraft/N78005), registered now
- Make and model: Boeing 777224
- Aircraft serial: 27581
- Aircraft time: 63,030 hours, 6,618 cycles
- System (JASC): [2931 · Hydraulic Pressure Indicator](https://openairdocs.org/jasc/2931)
- Part: Indicator
- Part number: TC125UK00ZY1
- Condition: Leaking
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2011100400639

## Discrepancy

HYD QTY C LOW HYD C PRESS 3060, QTY 0.40 LO.  REVIEW ADVISORY CHECKLIST.  PERFORMED THE MX TASK ADP & ACMP CASE DRAIN FILTER INSPECTION & FOUND NO EVIDENCE OF PUMP DAMAGE.  WHILE PERFORMING THIS TASK FOUND THE CTR HYD PUMP 1 PRESS AND CASE DRAIN FILTER MODULE DIFF PRESS INDICATOR LEAKING.  R&R THE NR 1 CTR HYD DIFF PRESS INDICATOR AS PER AMM 29-11-41.  LEAK CHECK GOOD.  CTR HYD SERVICED.

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