Air carrier first officer reports being cleared to taxi to runway 22L at mdw via P; north; and right...

Narrative:

We originally were cleared to taxi via taxiway P hold short of 22L. While holding short of 22L; we were cleared to cross runway 22L; taxi via P; north; and right for runway 22L; and pull up behind another aircraft. The aircraft was holding short of 22L. Neither I nor the captain noticed the taxi instructions required us to cross the hold short line for 22R until after exiting the area for runway 22L. After discussing the event; we were both unsure if we had been cleared across the hold line for 22R. One contributing factor to the event was that the ground control frequency was very busy. The spot where taxiways P and north meet with 22R should be identified as a hotspot.

Original NASA ASRS Text

Title: Air Carrier First Officer reports being cleared to taxi to Runway 22L at MDW via P; N; and R after crossing Runway 22L. During taxi; a hold short line for Runway 22R is crossed without specific clearance to do so.

Narrative: We originally were cleared to taxi via Taxiway P hold short of 22L. While holding short of 22L; we were cleared to cross Runway 22L; taxi via P; N; and R for Runway 22L; and pull up behind another aircraft. The aircraft was holding short of 22L. Neither I nor the Captain noticed the taxi instructions required us to cross the hold short line for 22R until after exiting the area for Runway 22L. After discussing the event; we were both unsure if we had been cleared across the hold line for 22R. One contributing factor to the event was that the Ground Control frequency was very busy. The spot where Taxiways P and N meet with 22R should be identified as a hotspot.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	955966
Time
Date	201106
Local Time Of Day	0601-1200
Place
Locale Reference	MDW.Tower
State Reference	IL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Person 1
Function	First Officer
Experience	Flight Crew Last 90 Days 201
Events
Anomaly	Deviation - Procedural Clearance Ground Incursion Runway

Air carrier first officer reports being cleared to taxi to runway 22L at mdw via P; north; and right after crossing runway 22L. During taxi; a hold short line for runway 22R is crossed without specific clearance to do so.