SDR UPS99529522

Service difficulty report · Hyd Line · Boeing 75724APF

Difficulty date: May 6, 1999
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N444UP
Make and model: Boeing 75724APF
Aircraft serial: 27389
System (JASC): 2910 · Hydraulic System, Main
Part: Hyd Line
Condition: Chafed
Location: Cargo Door
Stage of operation: DE
Nature of condition: K, J
Precautionary procedure: O

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

What was found

INSPECTION TYPE:N/A, ON DESENT RECIEVED A LEFT HYD QTY EICAS MESSAGE, NOTICED QTY WAS ABOUT HALF FULL AND DECREASING. AFTER LANDING MX FOUND A HYD LINE TO CARGO DOOR MANUAL PUMP HAD A HOLE WHERE ELEC PUMP WIRE BUNDLE CHAFED IT. ALSO, FOUND NR 1 AND NR 3 LT ELEC HYD PUMP WIRES BURNED FROM ARCING WHERE IT RUBBED ON HYD LINE. REPAIRED HYD LINE IAW MM 20-10-09, LEAK CHECK GOOD. REPAIRED WIRES IAW MM 20-10-13, OPS CHECK GOOD.

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