# SDR DALA2018121867261

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2018
- Submitted: December 18, 2018
- Operation: Air carrier
- Aircraft: [N713TW](https://openairdocs.org/aircraft/N713TW), registered now
- Make and model: Boeing 757-2Q8
- Registry model: [Boeing 757-2Q8](https://openairdocs.org/model/boeing-757-2q8) (OpenAirDocs)
- Aircraft serial: 28173
- Aircraft time: 81,462 hours, 21,676 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: Spoiler Sys
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2018121867261

## Discrepancy

SHIP 6809 - ALT GEAR EXT - DECLARED AN EMERGENCY INTO JFK DUE TO LT HYD SYS QUANTITY DECREASING. CORRECTIVE ACTION: #5 SPOILER O-RING VALVE CAP LEAKING. REPLACED O-RING, AND PTU AS PRECAUTIONARY.

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