Service difficulty report · O-Ring · Doug MD11F

Difficulty date
April 15, 2012
Submitted
April 16, 2012
Operation
Air carrier
Aircraft
N950AR
Make and model
Doug MD11F
Aircraft serial
48461
Aircraft time
67,905 hours, 15,486 cycles
Part
O-Ring
Part number
NAS1611228
Condition
Cut
Location
Hydraulic Sys
Component
Filter Module
Component part number
ASG05275001
Stage of operation
CR
How discovered
O
Nature of condition
K
Precautionary procedure
A

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

What was found

DURING CRUISE HYD 3 ELEV "OFF" LIGHT ON. HYD QTY CHECKED 4.2 GAL AND KEPT ON DROPPING TO BELOW 2.5 GALS. HYD 3 FAIL. DIVERTED TO VCP, LANDING NORMAL. MX FOUND O-RING CUT ON HYD FILTER MODULE. REMOVED AND REPLACED O-RING IAW 20-40-02. SERVICED NR 3 HYD IAW 12-13-02, RUN UP AND LEAK CHECK GOOD IAW 29-00-00 PG 216. A/C RELEASED FOR SERVICE.

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