# SDR DL75A060272

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2006
- Submitted: April 19, 2006
- Operation: Air carrier
- Aircraft: [N757AT](https://openairdocs.org/aircraft/N757AT), registered now
- Make and model: Boeing 757212
- Aircraft serial: 23127
- Aircraft time: 59,560 hours, 29,278 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Transfer Valve
- Part number: 251N30184
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75A060272

## Discrepancy

DURING CRUISE FLT L HYD QTY EICAS MESSAGE AND L HYD RSVR LIGHT ILLUMINATED.  OBSERVED L HYD QTY SLOWLY DECREASE FROM .48 TO .41.  TURNED OFF L ENGINE AND L ELEC HYD PUMPS HYD QTY STABILIZED AT .40.  T/S FOUND RUDDER HYD TRANSFER VALVE AND LINE LEAKING.  REPLACED RUDDER HYD TRANSFER VALVE INSTALLED TEMP LINE.

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