Md-11 captain experienced failure of the number two hydraulic system while on break and in cruise fl...

Narrative:

I was in the back taking my rest break (period 2 of 3) when the first officer woke me to say we had lost hydraulic system two. We notified dispatch via ACARS informing them of our situation and that at that point our plan was to continue to destination. On our descent we notified ATC and requested emergency services be standing by to assist. We landed and cleared on the taxiway and held while emergency services checked our landing gear to determine if it was safe to taxi to our ramp. Emergency services observed no hydraulic fluid or smoke in our brake area. With this input we continued to our ramp and parked. We were met by our mechanics where a thorough debrief took place. After blocking-in on our ramp our mechanics observed fluid leaking from the aft lower engine two cowl area. It appears some failure happened in that area.

Original NASA ASRS Text

Title: MD-11 Captain experienced failure of the number two hydraulic system while on break and in cruise flight. After discussion with Dispatch; the crew elects to continue to destination.

Narrative: I was in the back taking my rest break (period 2 of 3) when the First Officer woke me to say we had lost hydraulic system two. We notified Dispatch via ACARS informing them of our situation and that at that point our plan was to continue to destination. On our descent we notified ATC and requested emergency services be standing by to assist. We landed and cleared on the taxiway and held while emergency services checked our landing gear to determine if it was safe to taxi to our ramp. Emergency services observed no hydraulic fluid or smoke in our brake area. With this input we continued to our ramp and parked. We were met by our mechanics where a thorough debrief took place. After blocking-in on our ramp our mechanics observed fluid leaking from the aft lower engine two cowl area. It appears some failure happened in that area.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1404184
Time
Date	201611
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Hydraulic System
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Md-11 captain experienced failure of the number two hydraulic system while on break and in cruise flight. After discussion with dispatch; the crew elects to continue to destination.