Atx runway incursion had less than standard separation from aircraft takeoff. System error.

Attributes
ACN	314044
Time
Date	199508
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : yip
State Reference	MI
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	climbout : takeoff
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 2400 flight time type : 900
ASRS Report	314044
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : ground critical incursion : runway non adherence : required legal separation non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

Early in the morning, myself, a first officer and an observer pilot left the west ramp at yip. Our clearance was taxi to runway 23R via north on the ramp and runway 9L. This was one of the 2 standard rtes used to get to runway 23R. The clearance was read back by the first officer and we taxied with me at the nosewheel tiller and brakes. When exiting the ramp onto runway 9L, I and the observer pilot noticed a taxi/landing light at the other end of this runway. ATIS said runway 23R/left were the runways in use. Regardless, it is common practice at willow run to use all runways to expedite the flow of traffic. I was aware of this, yet continued on runway 9L assuming the traffic was awaiting IFR release for runway 23L or right. We checked in with tower frequency approximately 1/3 down runway 9L. The controller immediately tried to cancel the aircraft's (beech bonanza, or baron, I believe) takeoff clearance. The aircraft was already airborne and passed well above us, 200 ft or more. After our departure on runway 23R, I asked the controller if we had misunderstood the taxi instructions. He said no and apologized sincerely. Suggestions: anti-collision strobes on when taxiing on any runway, check in with tower when approaching your runway but taxiing on another runway, advise in the ATIS all of the runways that may be in use, have aircraft from the east ramp awaiting IFR release for runways 23R/left hold short of runway 27R.

Original NASA ASRS Text

Title: ATX RWY INCURSION HAD LTSS FROM ACFT TKOF. SYS ERROR.

Narrative: EARLY IN THE MORNING, MYSELF, A FO AND AN OBSERVER PLT LEFT THE W RAMP AT YIP. OUR CLRNC WAS TAXI TO RWY 23R VIA N ON THE RAMP AND RWY 9L. THIS WAS ONE OF THE 2 STANDARD RTES USED TO GET TO RWY 23R. THE CLRNC WAS READ BACK BY THE FO AND WE TAXIED WITH ME AT THE NOSEWHEEL TILLER AND BRAKES. WHEN EXITING THE RAMP ONTO RWY 9L, I AND THE OBSERVER PLT NOTICED A TAXI/LNDG LIGHT AT THE OTHER END OF THIS RWY. ATIS SAID RWY 23R/L WERE THE RWYS IN USE. REGARDLESS, IT IS COMMON PRACTICE AT WILLOW RUN TO USE ALL RWYS TO EXPEDITE THE FLOW OF TFC. I WAS AWARE OF THIS, YET CONTINUED ON RWY 9L ASSUMING THE TFC WAS AWAITING IFR RELEASE FOR RWY 23L OR R. WE CHKED IN WITH TWR FREQ APPROX 1/3 DOWN RWY 9L. THE CTLR IMMEDIATELY TRIED TO CANCEL THE ACFT'S (BEECH BONANZA, OR BARON, I BELIEVE) TKOF CLRNC. THE ACFT WAS ALREADY AIRBORNE AND PASSED WELL ABOVE US, 200 FT OR MORE. AFTER OUR DEP ON RWY 23R, I ASKED THE CTLR IF WE HAD MISUNDERSTOOD THE TAXI INSTRUCTIONS. HE SAID NO AND APOLOGIZED SINCERELY. SUGGESTIONS: ANTI-COLLISION STROBES ON WHEN TAXIING ON ANY RWY, CHK IN WITH TWR WHEN APCHING YOUR RWY BUT TAXIING ON ANOTHER RWY, ADVISE IN THE ATIS ALL OF THE RWYS THAT MAY BE IN USE, HAVE ACFT FROM THE E RAMP AWAITING IFR RELEASE FOR RWYS 23R/L HOLD SHORT OF RWY 27R.

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.