An impatient aircrew taxied without a clearance.

Attributes
ACN	266761
Time
Date	199403
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ege
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight ground other : taxi
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 80 flight time total : 3000 flight time type : 800
ASRS Report	266761
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were ready to taxi to runway 25 for a VFR departure. I called ground for a taxi clearance to runway 25 from the ramp area. We received no answer. I called again and received a 'standby.' I waited a while and called again. Ground responded with 'roger.' we accepted this as a clearance to taxi and we began taxiing towards runway 25. We got to runway 25 behind another aircraft. We then switched to tower frequency to advise them we were ready for a VFR departure. Tower came back and gave us instructions for a noise abatement departure and said something about not getting a taxi clearance. I did not have time to question ATC about this 'taxi clearance,' because we were now #1 for takeoff and I had not yet finished the checklists. For some reason, ATC would not respond to us immediately when we called for taxi clearance. The frequency was clear and there were very few calls from other airplanes. Ground control may have been very busy in the tower, but it was not obvious to us. We were also in a hurry and may have heard what we wanted to hear regarding the taxi clearance. I think, in the future, we need to slow down and verify any clearance that is not specific.

Original NASA ASRS Text

Title: AN IMPATIENT AIRCREW TAXIED WITHOUT A CLRNC.

Narrative: WE WERE READY TO TAXI TO RWY 25 FOR A VFR DEP. I CALLED GND FOR A TAXI CLRNC TO RWY 25 FROM THE RAMP AREA. WE RECEIVED NO ANSWER. I CALLED AGAIN AND RECEIVED A 'STANDBY.' I WAITED A WHILE AND CALLED AGAIN. GND RESPONDED WITH 'ROGER.' WE ACCEPTED THIS AS A CLRNC TO TAXI AND WE BEGAN TAXIING TOWARDS RWY 25. WE GOT TO RWY 25 BEHIND ANOTHER ACFT. WE THEN SWITCHED TO TWR FREQ TO ADVISE THEM WE WERE READY FOR A VFR DEP. TWR CAME BACK AND GAVE US INSTRUCTIONS FOR A NOISE ABATEMENT DEP AND SAID SOMETHING ABOUT NOT GETTING A TAXI CLRNC. I DID NOT HAVE TIME TO QUESTION ATC ABOUT THIS 'TAXI CLRNC,' BECAUSE WE WERE NOW #1 FOR TKOF AND I HAD NOT YET FINISHED THE CHKLISTS. FOR SOME REASON, ATC WOULD NOT RESPOND TO US IMMEDIATELY WHEN WE CALLED FOR TAXI CLRNC. THE FREQ WAS CLR AND THERE WERE VERY FEW CALLS FROM OTHER AIRPLANES. GND CTL MAY HAVE BEEN VERY BUSY IN THE TWR, BUT IT WAS NOT OBVIOUS TO US. WE WERE ALSO IN A HURRY AND MAY HAVE HEARD WHAT WE WANTED TO HEAR REGARDING THE TAXI CLRNC. I THINK, IN THE FUTURE, WE NEED TO SLOW DOWN AND VERIFY ANY CLRNC THAT IS NOT SPECIFIC.

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.