Service difficulty report · Hose · Doug MD11F

Difficulty date
April 25, 2018
Submitted
May 1, 2018
Operation
Air carrier
Aircraft
N576FE
Make and model
Doug MD11F
Aircraft serial
48501
Aircraft time
79,221 hours, 18,175 cycles
Part
Hose
Condition
Leaking
Location
Hyd System
Stage of operation
CR
How discovered
O
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

LEVEL 1 HYD 3 ELEVATOR OFF ALERT. QUANTITY WAS 4.7. AFTER APPROXIMATELY 5 MINUTES , QUANTITY DROPPED TO 3.9. AT QUANTITY 3.5 THE ELEVATOR OFF ALERT WENT WAY AND LEVEL 1 HYD 3 OFF APPEARED AND QUANTITY STABILIZED. DURING DECENT, WHEN SPOILERS WERE DEPLOYED, QUANTITY BEGAN TO DECREASE. AT 1.6, SLATS AND GEAR WERE BOTH EXTENDED AND THEN LEVEL 2 HAD 3 FAIL ALERT. QUANTITY DROPPED TO 0.8. REMOVED REPLACED DAMAGED HOSE IAW MM 29-11-22-4 AND 20-40-01-2. SERVICED HYD FLUIDE IAW MM 12-13-02-3. RAN #3 ENG, NO LEAK FOUND IAW JRH. ACFT OK FOR SERVICE.

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