MD11 captain reports hydraulic system 2 failure at FL300 causing autopilot 1 failure and aircraft pi...

Attributes
ACN	842309
Time
Date	200907
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.VOR
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 80 Flight Crew Total 6300 Flight Crew Type 4950
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance

Narrative:

Failure of hydraulic system 2 occurred at FL300. Was on autopilot 1 which also failed as a result of the associated hydraulic failure. The aircraft pitched up and resulted in an altitude deviation of approximately +400 ft before returning to FL300. Center called and asked for altitude verification at which time we informed center that we had encountered a hydraulic malfunction and were in the process of checklist action. No further response or action required for altitude deviation. Following appropriate checklist procedures for the hydraulic malfunction; it was determined that diversion was the most appropriate action. Coordination with center for re-filing was accomplished. No emergency declaration required. Rest of flight uneventful.

Original NASA ASRS Text

Title: MD11 Captain reports hydraulic system 2 failure at FL300 causing autopilot 1 failure and aircraft pitch up. Aircraft gained 400 FT before being returned to assigned altitude. The crew subsequently diverted to suitable airport for repairs.

Narrative: Failure of Hydraulic System 2 occurred at FL300. Was on autopilot 1 which also failed as a result of the associated hydraulic failure. The aircraft pitched up and resulted in an altitude deviation of approximately +400 FT before returning to FL300. Center called and asked for altitude verification at which time we informed Center that we had encountered a hydraulic malfunction and were in the process of checklist action. No further response or action required for altitude deviation. Following appropriate checklist procedures for the hydraulic malfunction; it was determined that diversion was the most appropriate action. Coordination with center for re-filing was accomplished. No emergency declaration required. Rest of flight uneventful.

Data retrieved from NASA's ASRS site as of April 2012 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.

MD11 captain reports hydraulic system 2 failure at FL300 causing autopilot 1 failure and aircraft pitch up. Aircraft gained 400 ft before being returned to assigned altitude. The crew subsequently diverted to suitable airport for repairs.