Saab 340 crossed runway 17C without tower clearance. First officer was on another frequency discussing a mechanical problem and the captain became concerned with this conversation.

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Attributes
ACN	370020
Time
Date	199705
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	SF 340A
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	other other : other pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 2600 flight time type : 250
ASRS Report	370020
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

My captain crossed an active runway without permission from the tower. We had a maintenance problem with the aircraft. I gave charge of the #1 communication to the captain while I was on the #2 communication trying to get ahold of maintenance. The captain was in charge of all ground and tower communication while I was on the #2 communication. I heard nothing that was being said on the #1 communication. We were crossing runway 17C when I came back and said 'I am on one' which meant I was no longer communicating with maintenance or ramp control, but now am in charge of ground and tower communication. The instant I took over the #1 communication I heard the tower say 'are you crossing runway 17C?' my captain said 'oh bleep' and then replied to the tower by saying 'yes.' tower's response was ok, no problem, cleared to cross runway 17C and hold short of the right. The captain was thinking about our maintenance problem and spaced out his hold short clearance. The only corrective action I can offer is the pilot who is in charge of which ever radio must concentrate and his duty at hand and not worry or be concerned with what the other pilot is doing. It is impossible for one pilot to do the duties of both pilots.

Original NASA ASRS Text

Title: SAAB 340 CROSSED RWY 17C WITHOUT TWR CLRNC. FO WAS ON ANOTHER FREQ DISCUSSING A MECHANICAL PROB AND THE CAPT BECAME CONCERNED WITH THIS CONVERSATION.

Narrative: MY CAPT CROSSED AN ACTIVE RWY WITHOUT PERMISSION FROM THE TWR. WE HAD A MAINT PROB WITH THE ACFT. I GAVE CHARGE OF THE #1 COM TO THE CAPT WHILE I WAS ON THE #2 COM TRYING TO GET AHOLD OF MAINT. THE CAPT WAS IN CHARGE OF ALL GND AND TWR COM WHILE I WAS ON THE #2 COM. I HEARD NOTHING THAT WAS BEING SAID ON THE #1 COM. WE WERE XING RWY 17C WHEN I CAME BACK AND SAID 'I AM ON ONE' WHICH MEANT I WAS NO LONGER COMMUNICATING WITH MAINT OR RAMP CTL, BUT NOW AM IN CHARGE OF GND AND TWR COM. THE INSTANT I TOOK OVER THE #1 COM I HEARD THE TWR SAY 'ARE YOU XING RWY 17C?' MY CAPT SAID 'OH BLEEP' AND THEN REPLIED TO THE TWR BY SAYING 'YES.' TWR'S RESPONSE WAS OK, NO PROB, CLRED TO CROSS RWY 17C AND HOLD SHORT OF THE R. THE CAPT WAS THINKING ABOUT OUR MAINT PROB AND SPACED OUT HIS HOLD SHORT CLRNC. THE ONLY CORRECTIVE ACTION I CAN OFFER IS THE PLT WHO IS IN CHARGE OF WHICH EVER RADIO MUST CONCENTRATE AND HIS DUTY AT HAND AND NOT WORRY OR BE CONCERNED WITH WHAT THE OTHER PLT IS DOING. IT IS IMPOSSIBLE FOR ONE PLT TO DO THE DUTIES OF BOTH PLTS.

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.