DC9 had runway incursion at stl.

Attributes
ACN	480962
Time
Date	200008
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl.airport
State Reference	MO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : stl.tower tower : abe.tower
Operator	common carrier : air carrier
Make Model Name	DC-9 10
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : stl.tower
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine
Experience	flight time total : 7000
ASRS Report	480962
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 100 flight time total : 7800 flight time type : 1800
ASRS Report	480640
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : clearance non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : executed go around none taken : detected after the fact
Miss Distance	horizontal : 3000
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance FAA Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	procedure or policy : stl.airport

Narrative:

While taxiing for departure at stl airport, the taxi clearance was misunderstood. The taxi clearance given was 'taxi via taxiway north, taxiway P, hold short of runway 30R. We thought that meant that we were cleared on both taxiway north and taxiway P all the way to the approach end of runway 30R. We realized our error only after being told to stop by ground control. If the clearance had been, taxiway north, taxiway P, hold short of runway 30R at taxiway north, this very likely could have been avoided.

Original NASA ASRS Text

Title: DC9 HAD RWY INCURSION AT STL.

Narrative: WHILE TAXIING FOR DEP AT STL ARPT, THE TAXI CLRNC WAS MISUNDERSTOOD. THE TAXI CLRNC GIVEN WAS 'TAXI VIA TXWY N, TXWY P, HOLD SHORT OF RWY 30R. WE THOUGHT THAT MEANT THAT WE WERE CLRED ON BOTH TXWY N AND TXWY P ALL THE WAY TO THE APCH END OF RWY 30R. WE REALIZED OUR ERROR ONLY AFTER BEING TOLD TO STOP BY GND CTL. IF THE CLRNC HAD BEEN, TXWY N, TXWY P, HOLD SHORT OF RWY 30R AT TXWY N, THIS VERY LIKELY COULD HAVE BEEN AVOIDED.

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.