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B737 departure from bur at V1 is requested by ATC to cancel takeoff; flight crew elects to continue takeoff advising tower.
| Attributes | |
| ACN | 800307 |
| Time | |
| Date | 200808 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bur.airport |
| State Reference | CA |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : zzzz.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| 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 |
| Experience | flight time last 90 days : 212 |
| ASRS Report | 800307 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 224 |
| ASRS Report | 800308 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : unable |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
We were cleared for takeoff on runway 15 at bur and subsequently took the runway and advanced the power for takeoff. Approaching V1; bur tower instructed us to cancel our takeoff clearance. By the time we could react; we were at V1 and I told the tower we were unable to comply and continued the takeoff. Once airborne; I asked bur tower if there was a problem and they replied no and handed us off to socal. My concern in this situation is the timing of the event. Obviously; the tower should not cancel our takeoff clearance at such a critical phase of flight unless absolutely critical. Make sure tower controllers understand how critical a rejected takeoff can be at high speeds and don't issue them unless absolutely necessary.
Original NASA ASRS Text
Title: B737 DEP FROM BUR AT V1 IS REQUESTED BY ATC TO CANCEL TKOF; FLT CREW ELECTS TO CONTINUE TKOF ADVISING TWR.
Narrative: WE WERE CLRED FOR TKOF ON RWY 15 AT BUR AND SUBSEQUENTLY TOOK THE RWY AND ADVANCED THE PWR FOR TKOF. APCHING V1; BUR TWR INSTRUCTED US TO CANCEL OUR TKOF CLRNC. BY THE TIME WE COULD REACT; WE WERE AT V1 AND I TOLD THE TWR WE WERE UNABLE TO COMPLY AND CONTINUED THE TKOF. ONCE AIRBORNE; I ASKED BUR TWR IF THERE WAS A PROB AND THEY REPLIED NO AND HANDED US OFF TO SOCAL. MY CONCERN IN THIS SITUATION IS THE TIMING OF THE EVENT. OBVIOUSLY; THE TWR SHOULD NOT CANCEL OUR TKOF CLRNC AT SUCH A CRITICAL PHASE OF FLT UNLESS ABSOLUTELY CRITICAL. MAKE SURE TWR CTLRS UNDERSTAND HOW CRITICAL A REJECTED TKOF CAN BE AT HIGH SPDS AND DON'T ISSUE THEM UNLESS ABSOLUTELY NECESSARY.
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.