SDR DALA2021081704745

Service difficulty report · Line · Boeing 757251

Difficulty date: August 16, 2021
Submitted: August 17, 2021
Operation: Air carrier
Aircraft: N549US
Make and model: Boeing 757251
Aircraft serial: 26496
Aircraft time: 77,987 hours, 28,029 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Condition: Leaking
Location: Hyd Truck Tilt
Stage of operation: CR
How discovered: O
Nature of condition: K
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

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.