Aircraft taxiing for departure at teb entered runway without ATC clearance.

Attributes
ACN	582555
Time
Date	200305
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : teb.airport
State Reference	NJ
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : charter
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : charter
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 2500 flight time type : 800
ASRS Report	582555
Person 2
Affiliation	company : charter
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On may/sun/03, XA55 local time we were cleared by teterboro ground to taxi to runway 1. As we proceeded to taxi, we were advised by ground control to follow a single engine cessna, which we proceeded to do. The cessna taxied up to and held short of runway 1 at intersection K. Our aircraft followed. Tower then cleared the cessna for takeoff. We taxied up to the hold short lines. I was reviewing the departure procedure when tower called and said taxi the full length. We acknowledged. I turned to the right to see if we had adequate room to turn the aircraft. At that time the captain advanced the power levers and taxied onto the runway. Tower responded by telling us we had not been cleared to taxi onto the runway, but to continue to the end, taxi off and hold short. We did as instructed and shortly thereafter cleared for takeoff. We assumed tower was expecting us to back taxi on runway 1, since we would have been unable to turn our aircraft on taxiway K. I should have advised tower of this and clarified 'back taxi onto runway 1.' or an intersection departure from taxiway K should have been requested. Total attention is needed during taxi even in daylight VFR conditions on a quiet day. ATC also could have instructed us to follow the cessna but to taxi to the end, while we were still on taxiway left.

Original NASA ASRS Text

Title: ACFT TAXIING FOR DEP AT TEB ENTERED RWY WITHOUT ATC CLRNC.

Narrative: ON MAY/SUN/03, XA55 LCL TIME WE WERE CLRED BY TETERBORO GND TO TAXI TO RWY 1. AS WE PROCEEDED TO TAXI, WE WERE ADVISED BY GND CTL TO FOLLOW A SINGLE ENG CESSNA, WHICH WE PROCEEDED TO DO. THE CESSNA TAXIED UP TO AND HELD SHORT OF RWY 1 AT INTXN K. OUR ACFT FOLLOWED. TWR THEN CLRED THE CESSNA FOR TKOF. WE TAXIED UP TO THE HOLD SHORT LINES. I WAS REVIEWING THE DEP PROC WHEN TWR CALLED AND SAID TAXI THE FULL LENGTH. WE ACKNOWLEDGED. I TURNED TO THE R TO SEE IF WE HAD ADEQUATE ROOM TO TURN THE ACFT. AT THAT TIME THE CAPT ADVANCED THE PWR LEVERS AND TAXIED ONTO THE RWY. TWR RESPONDED BY TELLING US WE HAD NOT BEEN CLRED TO TAXI ONTO THE RWY, BUT TO CONTINUE TO THE END, TAXI OFF AND HOLD SHORT. WE DID AS INSTRUCTED AND SHORTLY THEREAFTER CLRED FOR TKOF. WE ASSUMED TWR WAS EXPECTING US TO BACK TAXI ON RWY 1, SINCE WE WOULD HAVE BEEN UNABLE TO TURN OUR ACFT ON TXWY K. I SHOULD HAVE ADVISED TWR OF THIS AND CLARIFIED 'BACK TAXI ONTO RWY 1.' OR AN INTXN DEP FROM TXWY K SHOULD HAVE BEEN REQUESTED. TOTAL ATTN IS NEEDED DURING TAXI EVEN IN DAYLIGHT VFR CONDITIONS ON A QUIET DAY. ATC ALSO COULD HAVE INSTRUCTED US TO FOLLOW THE CESSNA BUT TO TAXI TO THE END, WHILE WE WERE STILL ON TXWY L.

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.