MD11 crew rejected takeoff when all items on the first officer's CADC system failed.

Attributes
ACN	515155
Time
Date	200106
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	MD-11
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	515155
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	maintenance problem : improper maintenance non adherence : published procedure non adherence : far non adherence : company policies other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : acft instruments eicas other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : rejected takeoff none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : repair performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : fault isolation
Supplementary
Problem Areas	Company Aircraft
Primary Problem	Company

Narrative:

Rejected takeoff. After emergency landing resulting from loss of CADC functions, and having dumped 160000 pounds of fuel, maintenance changed FCC computer. We refueled and taxied for another departure. Again, at approximately 130 KTS, a CADC failure was indicated. This time I chose to reject the takeoff. The aircraft was stopped on the runway, then taxied to the gate. I called for crash fire rescue equipment support as we had indications of overheated brakes. We deplaned normally and the flight was canceled.

Original NASA ASRS Text

Title: MD11 CREW REJECTED TKOF WHEN ALL ITEMS ON THE FO'S CADC SYS FAILED.

Narrative: REJECTED TKOF. AFTER EMER LNDG RESULTING FROM LOSS OF CADC FUNCTIONS, AND HAVING DUMPED 160000 LBS OF FUEL, MAINT CHANGED FCC COMPUTER. WE REFUELED AND TAXIED FOR ANOTHER DEP. AGAIN, AT APPROX 130 KTS, A CADC FAILURE WAS INDICATED. THIS TIME I CHOSE TO REJECT THE TKOF. THE ACFT WAS STOPPED ON THE RWY, THEN TAXIED TO THE GATE. I CALLED FOR CFR SUPPORT AS WE HAD INDICATIONS OF OVERHEATED BRAKES. WE DEPLANED NORMALLY AND THE FLT WAS CANCELED.

Data retrieved from NASA's ASRS site as of July 2007 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.