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B737-300 captain lost directional control of aircraft while turning onto runway for takeoff due to one engine power slower to increase than the other and a wet runway.
| Attributes | |
| ACN | 531131 |
| Time | |
| Date | 200111 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sju.airport |
| State Reference | PR |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| 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 | 531131 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | inflight encounter : weather other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : engine power output other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : regained aircraft control flight crew : rejected takeoff other |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Cleared for takeoff runway 8. Aircraft was completing turn onto centerline with takeoff power being applied just prior to rollout. Right engine power came up much slower than left engine. Aircraft veered to right side of runway. Power was retarded and aircraft was returned to centerline. First officer had informed tower that aircraft was aborting takeoff. Captain requested takeoff clearance from present position and was cleared for takeoff. Normal takeoff was completed. In retrospect, takeoff power was applied originally when aircraft was on wet runway paint markings with a cocked nosewheel and asymmetric power application resulting in aircraft misalignment with centerline.
Original NASA ASRS Text
Title: B737-300 CAPT LOST DIRECTIONAL CTL OF ACFT WHILE TURNING ONTO RWY FOR TKOF DUE TO ONE ENG PWR SLOWER TO INCREASE THAN THE OTHER AND A WET RWY.
Narrative: CLRED FOR TKOF RWY 8. ACFT WAS COMPLETING TURN ONTO CTRLINE WITH TKOF PWR BEING APPLIED JUST PRIOR TO ROLLOUT. R ENG PWR CAME UP MUCH SLOWER THAN L ENG. ACFT VEERED TO R SIDE OF RWY. PWR WAS RETARDED AND ACFT WAS RETURNED TO CTRLINE. FO HAD INFORMED TWR THAT ACFT WAS ABORTING TKOF. CAPT REQUESTED TKOF CLRNC FROM PRESENT POS AND WAS CLRED FOR TKOF. NORMAL TKOF WAS COMPLETED. IN RETROSPECT, TKOF PWR WAS APPLIED ORIGINALLY WHEN ACFT WAS ON WET RWY PAINT MARKINGS WITH A COCKED NOSEWHEEL AND ASYMMETRIC PWR APPLICATION RESULTING IN ACFT MISALIGNMENT WITH CTRLINE.
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.