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A320 flight crew aborts their takeoff due to directional control problems encountered by uneven spool up of the engines at ord.
| Attributes | |
| ACN | 580380 |
| Time | |
| Date | 200304 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 14000 flight time type : 2000 |
| ASRS Report | 580380 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : company policies non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : nosewheel steering other flight crewa other flight crewb |
| Resolutory Action | flight crew : rejected takeoff flight crew : overcame equipment problem flight crew : regained aircraft control |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Maintenance Human Performance Company Aircraft |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Takeoff on runway 9L was aborted due to nosewheel steering being unable to maintain directional control at low speed because of uneven engine spool up and an aircraft with a center of gravity at the rear limits. A normal takeoff was subsequently accomplished without incident. This is a result of a new policy by the airline to move the center of gravity to the rear as a fuel saving method, but has potential to result in an unsafe condition to the unwary. Center of gravity envelopes are very important even on the ground.
Original NASA ASRS Text
Title: A320 FLT CREW ABORTS THEIR TKOF DUE TO DIRECTIONAL CTL PROBS ENCOUNTERED BY UNEVEN SPOOL UP OF THE ENGS AT ORD.
Narrative: TKOF ON RWY 9L WAS ABORTED DUE TO NOSEWHEEL STEERING BEING UNABLE TO MAINTAIN DIRECTIONAL CTL AT LOW SPD BECAUSE OF UNEVEN ENG SPOOL UP AND AN ACFT WITH A CTR OF GRAVITY AT THE REAR LIMITS. A NORMAL TKOF WAS SUBSEQUENTLY ACCOMPLISHED WITHOUT INCIDENT. THIS IS A RESULT OF A NEW POLICY BY THE AIRLINE TO MOVE THE CTR OF GRAVITY TO THE REAR AS A FUEL SAVING METHOD, BUT HAS POTENTIAL TO RESULT IN AN UNSAFE CONDITION TO THE UNWARY. CTR OF GRAVITY ENVELOPES ARE VERY IMPORTANT EVEN ON THE GND.
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.