|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1801 To 2400|
|Locale Reference||airport : mdt|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||Light Transport, Low Wing, 2 Turboprop Eng|
|Flight Phase||climbout : takeoff|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 215|
flight time total : 3600
flight time type : 2300
|Function||flight crew : first officer|
|Qualification||pilot : instrument|
pilot : commercial
|Anomaly||incursion : runway|
non adherence : clearance
|Independent Detector||other controllera|
|Resolutory Action||none taken : detected after the fact|
none taken : anomaly accepted
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
It was the last leg of the day from mdt to hgr. As we taxi out to the run up block we pulled behind another commuter and called ready in sequence. Then we were clrd into position and hold. As we pulled onto the runway my first officer brought the speeders up and the lights on and told me we were clrd to go. I then advanced power and took off. Mdt tower advised me I was not clrd to go, and to contact departure. No evasive action was needed. I believe the reason I did not hear the call clearly was because of the taxi around the commuter in front of me was somewhat tight. And, my mistake was not to confirm the clearance. After talking to my first officer, he believed he heard clrd to go. Occasionally, controllers use the phrase 'clrd to go,' not putting any blame on them. I see the importance of using correct phrases all the time between controllers and pilots.
Original NASA ASRS Text
Title: COMMUTER TKOF WITHOUT CLRNC.
Narrative: IT WAS THE LAST LEG OF THE DAY FROM MDT TO HGR. AS WE TAXI OUT TO THE RUN UP BLOCK WE PULLED BEHIND ANOTHER COMMUTER AND CALLED READY IN SEQUENCE. THEN WE WERE CLRD INTO POS AND HOLD. AS WE PULLED ONTO THE RWY MY F/O BROUGHT THE SPEEDERS UP AND THE LIGHTS ON AND TOLD ME WE WERE CLRD TO GO. I THEN ADVANCED PWR AND TOOK OFF. MDT TWR ADVISED ME I WAS NOT CLRD TO GO, AND TO CONTACT DEP. NO EVASIVE ACTION WAS NEEDED. I BELIEVE THE REASON I DID NOT HEAR THE CALL CLEARLY WAS BECAUSE OF THE TAXI AROUND THE COMMUTER IN FRONT OF ME WAS SOMEWHAT TIGHT. AND, MY MISTAKE WAS NOT TO CONFIRM THE CLRNC. AFTER TALKING TO MY F/O, HE BELIEVED HE HEARD CLRD TO GO. OCCASIONALLY, CTLRS USE THE PHRASE 'CLRD TO GO,' NOT PUTTING ANY BLAME ON THEM. I SEE THE IMPORTANCE OF USING CORRECT PHRASES ALL THE TIME BTWN CTLRS AND PLTS.
Data retrieved from NASA's ASRS site as of August 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.