Md-11 flight crew reported loss of first officer air data computer on takeoff roll. Captain continue...

Attributes
ACN	1050728
Time
Date	201211
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZZ.Airport
State Reference	FO
Environment
Light	Night
Aircraft 1
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Component
Aircraft Component	Air Data Computer
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

On takeoff roll first officer called '80 KTS'; [then] around 130-140 KTS he called 'no airspeed'. [I] had normal indications and elected to continue takeoff. At approximately 300 feet AGL [I] lost flight director attitude information. Had no autopilot or auto throttles; [and no] control over fcp. First officer had no information on his side. Notified ATC; climbed to 5;000 feet MSL on heading vectors and worked QRH checklists for multiple level 2 alerts. During that process I asked the first officer to switch to captain CADC at which time I got all flight information back [and] was able to get autopilot and auto throttles back. All level 2 alerts cleared so I had the first officer build an approach back to [departure airport]. On approach airspeed low end foot appeared unreliable. Made flaps 35 landing with approximately 165 KTS airspeed; normal landing roll out.

Original NASA ASRS Text

Title: MD-11 flight crew reported loss of First Officer air data computer on takeoff roll. Captain continued takeoff since they were near V1; and after selecting the Captain's ADC they returned to departure airport.

Narrative: On takeoff roll First Officer called '80 KTS'; [then] around 130-140 KTS he called 'no airspeed'. [I] had normal indications and elected to continue takeoff. At approximately 300 feet AGL [I] lost flight director attitude information. Had no autopilot or auto throttles; [and no] control over FCP. First Officer had no information on his side. Notified ATC; climbed to 5;000 feet MSL on heading vectors and worked QRH checklists for multiple Level 2 alerts. During that process I asked the First Officer to switch to Captain CADC at which time I got all FLT information back [and] was able to get autopilot and auto throttles back. All Level 2 alerts cleared so I had the First Officer build an approach back to [departure airport]. On approach airspeed low end foot appeared unreliable. Made Flaps 35 landing with approximately 165 KTS airspeed; normal landing roll out.

Data retrieved from NASA's ASRS site as of July 2013 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.

Md-11 flight crew reported loss of first officer air data computer on takeoff roll. Captain continued takeoff since they were near V1; and after selecting the captain's air data computer they returned to departure airport.