SDR FDEA201707202010

Service difficulty report · Hose · Doug MD11F

Difficulty date: July 20, 2017
Submitted: July 21, 2017
Operation: Air carrier
Aircraft: N597FE
Make and model: Doug MD11F
Aircraft serial: 48596
Aircraft time: 79,000 hours, 15,607 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Hose
Condition: Failed
Location: Hyd Pump
Stage of operation: CR
How discovered: 9
Nature of condition: K, J
Precautionary procedure: A

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

What was found

HYD 3 FAILED WHILE AIRBORNE 1.0 HRS, AT FL360. R & R THE NR 3 ENGINE HYD PUMP. R & R FILTER TO PYLON HOSE ASSY. DRY MOTORED ENGINE. NO LEAKS NOTED ON LT AND RT PUMPS, THE HYD LINE AND ON THE FILTERS. RAN THE NR 3 ENGINE. ALL OPS AND INDICATIONS FOR NR 3 HYD SYSTEM, CHECKED GOOD. NO LEAKS NOTED IAW MM 29-11-20-4-2 AND JRH.

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