A cpr jet crosses runway 4L when ground controller had advised them to hold short at mdw, il.

Attributes
ACN	473706
Time
Date	200005
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mdw.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : mdw.tower
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 11800
ASRS Report	473706
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued advisory none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Airport Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

What was thought ground control said: cpr xy, cross runway 4L and stay with me. What ground control said: cpr xy, hold short runway 4L and stay with me. Both pilots in our aircraft did not catch proper instructions given by ground control and crossed the approach end of runway 4L on the way to runway 4R for departure. Controllers did not seem too concerned and we apologized for the misunderstanding. No traffic or aircraft on runway 4L during occurrence. Preventive measure: readback hold shorts. Clear left and right when crossing any runway. Be cautious when active runways are being changed, they had been using runway 31C for active, and were switching to runway 4L and 4R.

Original NASA ASRS Text

Title: A CPR JET CROSSES RWY 4L WHEN GND CTLR HAD ADVISED THEM TO HOLD SHORT AT MDW, IL.

Narrative: WHAT WAS THOUGHT GND CTL SAID: CPR XY, CROSS RWY 4L AND STAY WITH ME. WHAT GND CTL SAID: CPR XY, HOLD SHORT RWY 4L AND STAY WITH ME. BOTH PLTS IN OUR ACFT DID NOT CATCH PROPER INSTRUCTIONS GIVEN BY GND CTL AND CROSSED THE APCH END OF RWY 4L ON THE WAY TO RWY 4R FOR DEP. CTLRS DID NOT SEEM TOO CONCERNED AND WE APOLOGIZED FOR THE MISUNDERSTANDING. NO TFC OR ACFT ON RWY 4L DURING OCCURRENCE. PREVENTIVE MEASURE: READBACK HOLD SHORTS. CLR L AND R WHEN XING ANY RWY. BE CAUTIOUS WHEN ACTIVE RWYS ARE BEING CHANGED, THEY HAD BEEN USING RWY 31C FOR ACTIVE, AND WERE SWITCHING TO RWY 4L AND 4R.

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.