Narrative:

I was acting as instructor on an IFR training flight from mdw to vys. From the west ramp, we were instructed to taxi to runway 31L via txwys west, J, F, F4. No hold short was mentioned. This taxi route crosses runways 4L/22R and 4R/22L, neither of which was advertised as active on the ATIS. As we approached runway 22L, my student (who was in the left seat), noticed an aircraft on runway 22L and decided to stop. About this time, I observed that the aircraft was on its takeoff roll. Although we were past the hold short lines, all parts of our aircraft were short of the edge of runway 22L, so we held position. After the other aircraft was clear, I queried ground as to whether we could now cross runway 22L. From the tone of their response, it sounded like they had either forgotten about us or had not coordinated our taxi route with local control's decision to use runway 22L for a departure. While we did follow our assigned taxi route, I would have been more vigilant in looking for traffic on runway 22L/right if ATIS had advertised their use. I believe that if explicit permission from ground control had been required to cross runways, along with better coordination between ground and local controllers, this would not have happened. In addition, ground radar might also have warned the controllers in time.

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Original NASA ASRS Text

Title: PA28 INSTRUCTOR AND STUDENT HAD CLRNC TO CROSS A RWY. THE STUDENT STOPPED SHORT OF THE RWY WHEN HE NOTICED AN ACR ON TKOF ROLL ON THE INTERSECTING RWY.

Narrative: I WAS ACTING AS INSTRUCTOR ON AN IFR TRAINING FLT FROM MDW TO VYS. FROM THE W RAMP, WE WERE INSTRUCTED TO TAXI TO RWY 31L VIA TXWYS W, J, F, F4. NO HOLD SHORT WAS MENTIONED. THIS TAXI RTE CROSSES RWYS 4L/22R AND 4R/22L, NEITHER OF WHICH WAS ADVERTISED AS ACTIVE ON THE ATIS. AS WE APCHED RWY 22L, MY STUDENT (WHO WAS IN THE L SEAT), NOTICED AN ACFT ON RWY 22L AND DECIDED TO STOP. ABOUT THIS TIME, I OBSERVED THAT THE ACFT WAS ON ITS TKOF ROLL. ALTHOUGH WE WERE PAST THE HOLD SHORT LINES, ALL PARTS OF OUR ACFT WERE SHORT OF THE EDGE OF RWY 22L, SO WE HELD POS. AFTER THE OTHER ACFT WAS CLR, I QUERIED GND AS TO WHETHER WE COULD NOW CROSS RWY 22L. FROM THE TONE OF THEIR RESPONSE, IT SOUNDED LIKE THEY HAD EITHER FORGOTTEN ABOUT US OR HAD NOT COORDINATED OUR TAXI RTE WITH LCL CTL'S DECISION TO USE RWY 22L FOR A DEP. WHILE WE DID FOLLOW OUR ASSIGNED TAXI RTE, I WOULD HAVE BEEN MORE VIGILANT IN LOOKING FOR TFC ON RWY 22L/R IF ATIS HAD ADVERTISED THEIR USE. I BELIEVE THAT IF EXPLICIT PERMISSION FROM GND CTL HAD BEEN REQUIRED TO CROSS RWYS, ALONG WITH BETTER COORD BTWN GND AND LCL CTLRS, THIS WOULD NOT HAVE HAPPENED. IN ADDITION, GND RADAR MIGHT ALSO HAVE WARNED THE CTLRS IN TIME.

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.