# SDR AALA20161102007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 30, 2016
- Submitted: November 2, 2016
- Operation: Air carrier
- Aircraft: [N193AN](https://openairdocs.org/aircraft/N193AN), registered now
- Make and model: Boeing 757223
- Aircraft serial: 32387
- Aircraft time: 54,547 hours, 14,307 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Damaged
- Location: Hydraulic Sys
- Stage of operation: AP
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20161102007

## Discrepancy

AIRCRAFT WAS GROUNDED.  EMERGENCY DECLARED.  LANDING UNEVENTFUL.  DURING APPROACH RECEIVED A LEFT HYDRAULIC QUANTITY EICAS MESSAGE ACCOMPANIED BY ILLUMINATION OF THE LEFT RESERVOIR ANNUNCIATOR.  MAINTENANCE FOUND THE LEFT RUDDER AND ELEVATOR HYDRAULIC SHUTOFF VALVE O RING LEAKING.  REMOVED AND REPLACED O RING IAW AMM 27-23-01.  LEAK AND OPERATIONAL CHECKS NORMAL.

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