A carj crew, after landing at ord, turned onto a runway, mistaking it for their assigned taxiway.

Attributes
ACN	534154
Time
Date	200112
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	IMC
Weather Elements	other
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet CL65, Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 2000
ASRS Report	534154
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 2000 flight time type : 500
ASRS Report	533983
Events
Anomaly	incursion : runway non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact other
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

The first officer landed on runway 22R at ord without incident. I was expecting runway 27R, however, and had studied the taxi path to our gate more fully from that runway. We cleared runway 22R at taxiway C and were cleared to cross runway 27R. We did this. We received this clearance shortly after crossing runway 27R 'air carrier xyz, turn left on taxiway H if you still can and proceed east.' this clearance confused me. I thought that I had almost passed taxiway H, when it was actually still in front of me. I made a hard left turn onto what turned out to be runway 27R. I saw my mistake almost as soon as I was on the runway but it was too late to turn back. I quickly exited at taxiway H1. We taxied to the gate without further incident. What could be done? 1) better markings at the intersection of taxiway C and taxiway H. I did not see any in the dark. 2) more rest for flight crew's. The 'early late early late' scheduling puts your body off an even keel. 3) a better view for the ground controller. He must have thought that I was about to pass taxiway H instead of just crossing runway 27R.

Original NASA ASRS Text

Title: A CARJ CREW, AFTER LNDG AT ORD, TURNED ONTO A RWY, MISTAKING IT FOR THEIR ASSIGNED TXWY.

Narrative: THE FO LANDED ON RWY 22R AT ORD WITHOUT INCIDENT. I WAS EXPECTING RWY 27R, HOWEVER, AND HAD STUDIED THE TAXI PATH TO OUR GATE MORE FULLY FROM THAT RWY. WE CLRED RWY 22R AT TXWY C AND WERE CLRED TO CROSS RWY 27R. WE DID THIS. WE RECEIVED THIS CLRNC SHORTLY AFTER XING RWY 27R 'ACR XYZ, TURN L ON TXWY H IF YOU STILL CAN AND PROCEED E.' THIS CLRNC CONFUSED ME. I THOUGHT THAT I HAD ALMOST PASSED TXWY H, WHEN IT WAS ACTUALLY STILL IN FRONT OF ME. I MADE A HARD L TURN ONTO WHAT TURNED OUT TO BE RWY 27R. I SAW MY MISTAKE ALMOST AS SOON AS I WAS ON THE RWY BUT IT WAS TOO LATE TO TURN BACK. I QUICKLY EXITED AT TXWY H1. WE TAXIED TO THE GATE WITHOUT FURTHER INCIDENT. WHAT COULD BE DONE? 1) BETTER MARKINGS AT THE INTXN OF TXWY C AND TXWY H. I DID NOT SEE ANY IN THE DARK. 2) MORE REST FOR FLC'S. THE 'EARLY LATE EARLY LATE' SCHEDULING PUTS YOUR BODY OFF AN EVEN KEEL. 3) A BETTER VIEW FOR THE GND CTLR. HE MUST HAVE THOUGHT THAT I WAS ABOUT TO PASS TXWY H INSTEAD OF JUST XING 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.