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Crj-900 flight crew rejects takeoff when captain's air data computer appears to fail and multiple EICAS warnings illuminate.
| Attributes | |
| ACN | 787126 |
| Time | |
| Date | 200805 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | CRJ 900 (all) Canadair Regional Jet 900 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| ASRS Report | 787126 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : eicas other flight crewa |
| Resolutory Action | flight crew : rejected takeoff |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
During the takeoff roll; the captain; PNF; noticed what appeared to be the loss of his air data computer for his side only. This was accompanied by several amber EICAS indications and amber caution lights flashing on the glare shield. I; the first officer; was the PF. After noticing the loss of his air data indications; the captain immediately aborted the takeoff and exited the runway. This occurred at about 95 KTS; making it a high speed abort. After exiting well clear of the runway and notifying ATC of the event; we realized we had lost all steering capability. While coordinating with ATC; maintenance; and flight operations; we tried to regain nosewheel steering through the use of checklists in the manual. This was unsuccessful; however; and the aircraft had to be brought back to the gate through the use of a tug.
Original NASA ASRS Text
Title: CRJ-900 FLT CREW REJECTS TKOF WHEN CAPT'S AIR DATA COMPUTER APPEARS TO FAIL AND MULTIPLE EICAS WARNINGS ILLUMINATE.
Narrative: DURING THE TKOF ROLL; THE CAPT; PNF; NOTICED WHAT APPEARED TO BE THE LOSS OF HIS AIR DATA COMPUTER FOR HIS SIDE ONLY. THIS WAS ACCOMPANIED BY SEVERAL AMBER EICAS INDICATIONS AND AMBER CAUTION LIGHTS FLASHING ON THE GLARE SHIELD. I; THE FO; WAS THE PF. AFTER NOTICING THE LOSS OF HIS AIR DATA INDICATIONS; THE CAPT IMMEDIATELY ABORTED THE TKOF AND EXITED THE RWY. THIS OCCURRED AT ABOUT 95 KTS; MAKING IT A HIGH SPD ABORT. AFTER EXITING WELL CLR OF THE RWY AND NOTIFYING ATC OF THE EVENT; WE REALIZED WE HAD LOST ALL STEERING CAPABILITY. WHILE COORDINATING WITH ATC; MAINT; AND FLT OPS; WE TRIED TO REGAIN NOSEWHEEL STEERING THROUGH THE USE OF CHKLISTS IN THE MANUAL. THIS WAS UNSUCCESSFUL; HOWEVER; AND THE ACFT HAD TO BE BROUGHT BACK TO THE GATE THROUGH THE USE OF A TUG.
Data retrieved from NASA's ASRS site as of May 2009 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.