<< >> NASA ASRS Report 339130, June 1996

Pilot requests takeoff delay to prepare for a short field takeoff, then departs without clearance. Controller reminds him that he was not cleared. Takeoff without clearance.

Attributes
ACN	339130
Time
Date	199606
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : prc
State Reference	AZ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument
Experience	flight time last 90 days : 43 flight time total : 300 flight time type : 214
ASRS Report	339130
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Prescott tower cleared me to taxi to position and hold. I asked for a delay, to set the aircraft up for a short field takeoff. I taxied onto the runway and set the aircraft up for short fuel takeoff. Then I started my takeoff roll and takeoff. Tower advised me that I was not cleared for takeoff. I didn't realize that until I was told. I had to offset to the left for traffic ahead. Once I was clear of the class D airspace, I called tower and reported clear and I was sorry for the mix up. Tower said no problem þ frequency change approved. Far as I can tell there was no problem. I wanted to report this to be safe. To correct the problem I should have paid more attention to what the controller wa saying.

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Original NASA ASRS Text

Title: PLT REQUESTS TKOF DELAY TO PREPARE FOR A SHORT FIELD TKOF, THEN DEPARTS WITHOUT CLRNC. CTLR REMINDS HIM THAT HE WAS NOT CLRED. TKOF WITHOUT CLRNC.

Narrative: PRESCOTT TWR CLRED ME TO TAXI TO POS AND HOLD. I ASKED FOR A DELAY, TO SET THE ACFT UP FOR A SHORT FIELD TKOF. I TAXIED ONTO THE RWY AND SET THE ACFT UP FOR SHORT FUEL TKOF. THEN I STARTED MY TKOF ROLL AND TKOF. TWR ADVISED ME THAT I WAS NOT CLRED FOR TKOF. I DIDN'T REALIZE THAT UNTIL I WAS TOLD. I HAD TO OFFSET TO THE L FOR TFC AHEAD. ONCE I WAS CLR OF THE CLASS D AIRSPACE, I CALLED TWR AND RPTED CLR AND I WAS SORRY FOR THE MIX UP. TWR SAID NO PROB þ FREQ CHANGE APPROVED. FAR AS I CAN TELL THERE WAS NO PROB. I WANTED TO RPT THIS TO BE SAFE. TO CORRECT THE PROB I SHOULD HAVE PAID MORE ATTN TO WHAT THE CTLR WA SAYING.

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.