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Learjet 60 on takeoff with snow cleared runway and 20 KT crosswind aborted due to lack of acceleration and aircraft drifting off centerline.
| Attributes | |
| ACN | 388155 |
| Time | |
| Date | 199712 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : grr |
| State Reference | MI |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Learjet 60 |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : takeoff other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 3300 flight time type : 250 |
| ASRS Report | 388155 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : rejected takeoff flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
During takeoff on runway 35 I performed a high speed abort due to a combination of a sudden rapid deceleration at vr and inability to maintain the center of the runway when rotation was initiated. I elected to abort because I felt this was the safest option due to the remaining runway length and width available (8500 ft by 150 ft). The abort was successful, as control of the aircraft was maintained throughout. Upon completion of the abort we taxied off the runway and back to the FBO. At the particular time this event occurred, runway 35 was the only one open and in operation. The main runway, 8R, was closed for snow removal. There were 2 reasons I chose to use runway 35. One, was because aircraft were departing off of it successfully. A DC9 had departed just a few mins prior to us with no problems. Two, was because we had back taxied down a portion of it and felt it was ok to use because I had taken off on runways of the same conditions before with no problem. During the takeoff roll we were experiencing slight decelerations, which I fully expected given the conditions, however at vr a sudden rapid deceleration was felt, which seemed very abnormal. I attempted to continue and try to regain rotation speed but the aircraft started to drift off the center of the runway while still below rotation speed. I tried to maintain the center of the runway with the proper control inputs but this did not seem to help. At that point I then performed the abort. I feel the reason for the deceleration and subsequent drift from centerline was due to a combination of the wind and a possible large snow drift on the runway. As for the wind component at the time, it was well within the demonstrated crosswind component of the learjet 60. In retrospect, I feel I should have elected to use runway 35 and should have waited for runway 8R to open. I feel there was a bit of complacency involved due to my past experiences and successful takeoffs in these conditions and also the fact that the jet aircraft were successfully departing from runway 35.
Original NASA ASRS Text
Title: LEARJET 60 ON TKOF WITH SNOW CLRED RWY AND 20 KT XWIND ABORTED DUE TO LACK OF ACCELERATION AND ACFT DRIFTING OFF CTRLINE.
Narrative: DURING TKOF ON RWY 35 I PERFORMED A HIGH SPD ABORT DUE TO A COMBINATION OF A SUDDEN RAPID DECELERATION AT VR AND INABILITY TO MAINTAIN THE CTR OF THE RWY WHEN ROTATION WAS INITIATED. I ELECTED TO ABORT BECAUSE I FELT THIS WAS THE SAFEST OPTION DUE TO THE REMAINING RWY LENGTH AND WIDTH AVAILABLE (8500 FT BY 150 FT). THE ABORT WAS SUCCESSFUL, AS CTL OF THE ACFT WAS MAINTAINED THROUGHOUT. UPON COMPLETION OF THE ABORT WE TAXIED OFF THE RWY AND BACK TO THE FBO. AT THE PARTICULAR TIME THIS EVENT OCCURRED, RWY 35 WAS THE ONLY ONE OPEN AND IN OP. THE MAIN RWY, 8R, WAS CLOSED FOR SNOW REMOVAL. THERE WERE 2 REASONS I CHOSE TO USE RWY 35. ONE, WAS BECAUSE ACFT WERE DEPARTING OFF OF IT SUCCESSFULLY. A DC9 HAD DEPARTED JUST A FEW MINS PRIOR TO US WITH NO PROBS. TWO, WAS BECAUSE WE HAD BACK TAXIED DOWN A PORTION OF IT AND FELT IT WAS OK TO USE BECAUSE I HAD TAKEN OFF ON RWYS OF THE SAME CONDITIONS BEFORE WITH NO PROB. DURING THE TKOF ROLL WE WERE EXPERIENCING SLIGHT DECELERATIONS, WHICH I FULLY EXPECTED GIVEN THE CONDITIONS, HOWEVER AT VR A SUDDEN RAPID DECELERATION WAS FELT, WHICH SEEMED VERY ABNORMAL. I ATTEMPTED TO CONTINUE AND TRY TO REGAIN ROTATION SPD BUT THE ACFT STARTED TO DRIFT OFF THE CTR OF THE RWY WHILE STILL BELOW ROTATION SPD. I TRIED TO MAINTAIN THE CTR OF THE RWY WITH THE PROPER CTL INPUTS BUT THIS DID NOT SEEM TO HELP. AT THAT POINT I THEN PERFORMED THE ABORT. I FEEL THE REASON FOR THE DECELERATION AND SUBSEQUENT DRIFT FROM CTRLINE WAS DUE TO A COMBINATION OF THE WIND AND A POSSIBLE LARGE SNOW DRIFT ON THE RWY. AS FOR THE WIND COMPONENT AT THE TIME, IT WAS WELL WITHIN THE DEMONSTRATED XWIND COMPONENT OF THE LEARJET 60. IN RETROSPECT, I FEEL I SHOULD HAVE ELECTED TO USE RWY 35 AND SHOULD HAVE WAITED FOR RWY 8R TO OPEN. I FEEL THERE WAS A BIT OF COMPLACENCY INVOLVED DUE TO MY PAST EXPERIENCES AND SUCCESSFUL TKOFS IN THESE CONDITIONS AND ALSO THE FACT THAT THE JET ACFT WERE SUCCESSFULLY DEPARTING FROM RWY 35.
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.