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Private pilot in small aircraft aircraft in position for takeoff misinterped tower instructions and took off without clearance.
| Attributes | |
| ACN | 395060 |
| Time | |
| Date | 199802 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sdl |
| State Reference | AZ |
| Altitude | agl bound lower : 0 agl bound upper : 300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sdl |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff ground : holding |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 20 flight time total : 1100 flight time type : 10 |
| ASRS Report | 395060 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | incursion : runway non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While waiting to depart sdl, I became aware that the pattern was saturated. The controller was advising inbound traffic to remain clear of the class D area. He advised cpr jet traffic that there would be 1 departure prior to his arrival and cleared me into position and hold. The other aircraft, on landing roll, cleared the runway. The tower called my n-number, advised of the jet on final, traffic on downwind and was stepped on by other traffic. I confirmed that I was taking off, and started my roll. When I was approximately 300 ft AGL the tower advised that I had not been cleared for takeoff and that he had only given me a TA, prior to my departure. Sdl has been going through extensive training of new controllers. Lcls have worked to accommodate and anticipate the controller. I do not know if the controller on duty was a trainee, but I believe I was caught up in trying to expedite my departure to clear the runway for the traffic behind me. In retrospect, I should have remained in position and asked the controller to repeat his instructions.
Original NASA ASRS Text
Title: PVT PLT IN SMA ACFT IN POS FOR TKOF MISINTERPED TWR INSTRUCTIONS AND TOOK OFF WITHOUT CLRNC.
Narrative: WHILE WAITING TO DEPART SDL, I BECAME AWARE THAT THE PATTERN WAS SATURATED. THE CTLR WAS ADVISING INBOUND TFC TO REMAIN CLR OF THE CLASS D AREA. HE ADVISED CPR JET TFC THAT THERE WOULD BE 1 DEP PRIOR TO HIS ARR AND CLRED ME INTO POS AND HOLD. THE OTHER ACFT, ON LNDG ROLL, CLRED THE RWY. THE TWR CALLED MY N-NUMBER, ADVISED OF THE JET ON FINAL, TFC ON DOWNWIND AND WAS STEPPED ON BY OTHER TFC. I CONFIRMED THAT I WAS TAKING OFF, AND STARTED MY ROLL. WHEN I WAS APPROX 300 FT AGL THE TWR ADVISED THAT I HAD NOT BEEN CLRED FOR TKOF AND THAT HE HAD ONLY GIVEN ME A TA, PRIOR TO MY DEP. SDL HAS BEEN GOING THROUGH EXTENSIVE TRAINING OF NEW CTLRS. LCLS HAVE WORKED TO ACCOMMODATE AND ANTICIPATE THE CTLR. I DO NOT KNOW IF THE CTLR ON DUTY WAS A TRAINEE, BUT I BELIEVE I WAS CAUGHT UP IN TRYING TO EXPEDITE MY DEP TO CLR THE RWY FOR THE TFC BEHIND ME. IN RETROSPECT, I SHOULD HAVE REMAINED IN POS AND ASKED THE CTLR TO REPEAT HIS INSTRUCTIONS.
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.