# SDR DALA2021081704745

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2021
- Submitted: August 17, 2021
- Operation: Air carrier
- Aircraft: [N549US](https://openairdocs.org/aircraft/N549US), registered now
- Make and model: Boeing 757251
- Aircraft serial: 26496
- Aircraft time: 77,987 hours, 28,029 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Line
- Condition: Leaking
- Location: Hyd Truck Tilt
- 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/DALA2021081704745

## Discrepancy

SHIP 5649-MISC/DE- AT CRUISE L HYD QTY EICAS MESSAGE WITH 0.46 QTY REMAINING. FOLLOWED QRH, THEN QTY DECREASED TO ZERO WITH L HYD SYS PRESS EICAS MESSAGE. CORRECTIVE ACTION: FOUND TRUCK TILT ACTUATOR LINE LEAKING. REPLACED LINE. NO LEAKS NOTED. R/R PRESSURE / CASE DRAIN FILTER FOR LEFT EDP IAW B757 AMM 29-11. NO CONTAMINATION FOUND AT FILTERS, DPI'S OKAY. SERVICED HYD SYSTEM, RAN ENGINES IAW B757 AMM 71-00. LT EDP OKAY.

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