Taxi without a clearance.

Attributes
ACN	294740
Time
Date	199501
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : oma
State Reference	NE
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cvg
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 8200 flight time type : 4000
ASRS Report	294740
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We taxied out of the gate without a taxi clearance. I (the captain) was off the ground frequency finishing the engine start and clearing off the ground crew, when the first officer called ground for taxi. I heard him call, but wasn't on the frequency to hear the response. He didn't transmit on ground control so there wasn't a response. He didn't inform me of this so I assumed we were cleared to the runway. I stated runway 32L and he (the first officer) said yes. Ground control stopped us soon afterward.

Original NASA ASRS Text

Title: TAXI WITHOUT A CLRNC.

Narrative: WE TAXIED OUT OF THE GATE WITHOUT A TAXI CLRNC. I (THE CAPT) WAS OFF THE GND FREQ FINISHING THE ENG START AND CLRING OFF THE GND CREW, WHEN THE FO CALLED GND FOR TAXI. I HEARD HIM CALL, BUT WASN'T ON THE FREQ TO HEAR THE RESPONSE. HE DIDN'T XMIT ON GND CTL SO THERE WASN'T A RESPONSE. HE DIDN'T INFORM ME OF THIS SO I ASSUMED WE WERE CLRED TO THE RWY. I STATED RWY 32L AND HE (THE FO) SAID YES. GND CTL STOPPED US SOON AFTERWARD.

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.