B727 crew crossed the hold short lines for runway 35C on taxiway el at dfw without clearance.

Attributes
ACN	544993
Time
Date	200204
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw.tower
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : dfw.tower
Make Model Name	Commercial Fixed Wing
Flight Phase	landing : go around
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 6600
ASRS Report	544993
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	incursion : runway non adherence : far non adherence : published procedure non adherence : company policies non adherence : clearance other anomaly other
Independent Detector	other controllera other flight crewa other flight crewb other other : 4.5
Resolutory Action	controller : issued new clearance flight crew : executed go around other
Consequence	faa : investigated faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance Airport ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Our flight landed on runway 35R and was cleared to hold short of runway 35C. On the way to this clearance limit, we received another clearance which was partially stepped on by another transmission. I began to read back what I had 'heard' -- cleared to cross runway 35L, contact ground on 65. As I started reading this back, I realized this did not include a clearance to first cross runway 35C. The captain was taxiing and apparently heard a clearance to cross runway 35C because he was not stopping to hold short of runway 35C. He then realized there was a disconnect between what he heard and what I heard and stopped the airplane. The airplane, however, had already crossed the hold short line of runway 35C when it stopped and this caused an aircraft on final to runway 35C to be sent around. We were then cleared to cross runway 35C and 35L to taxi to the ramp. There is too much pressure to cross too much traffic at dfw. The frequencies are too crowded and if you miss a call, it takes too long to get a word in over the controller's series of calls. Supplemental information from acn 543960: heavy radio traffic a major C0NTRIBUTOR. Stop/go lights at all intersections would preclude this sort of confusion and communication breakdown. Multiplexed radio frequencies that are 'clip proof' would be advisable as well. Callback conversation with reporter revealed the following information: when the first officer was hesitant with the crossing clearance the captain stopped to confirm the clearance to cross. By that time it was too late. The tower had a clear view of the area and initiated a go around for the aircraft on final for runway 35C. The crew could not get a word in edge wise, even to inform the tower they were over the line. The pilot questions having so much traffic that the aircraft are not able to communication with the tower. He contacted the tower supervisor when he got to the gate. The supervisor had not had time to review the tapes. The pilot has heard nothing since.

Original NASA ASRS Text

Title: B727 CREW CROSSED THE HOLD SHORT LINES FOR RWY 35C ON TXWY EL AT DFW WITHOUT CLRNC.

Narrative: OUR FLT LANDED ON RWY 35R AND WAS CLRED TO HOLD SHORT OF RWY 35C. ON THE WAY TO THIS CLRNC LIMIT, WE RECEIVED ANOTHER CLRNC WHICH WAS PARTIALLY STEPPED ON BY ANOTHER TRANSMISSION. I BEGAN TO READ BACK WHAT I HAD 'HEARD' -- CLRED TO CROSS RWY 35L, CONTACT GND ON 65. AS I STARTED READING THIS BACK, I REALIZED THIS DID NOT INCLUDE A CLRNC TO FIRST CROSS RWY 35C. THE CAPT WAS TAXIING AND APPARENTLY HEARD A CLRNC TO CROSS RWY 35C BECAUSE HE WAS NOT STOPPING TO HOLD SHORT OF RWY 35C. HE THEN REALIZED THERE WAS A DISCONNECT BETWEEN WHAT HE HEARD AND WHAT I HEARD AND STOPPED THE AIRPLANE. THE AIRPLANE, HOWEVER, HAD ALREADY CROSSED THE HOLD SHORT LINE OF RWY 35C WHEN IT STOPPED AND THIS CAUSED AN ACFT ON FINAL TO RWY 35C TO BE SENT AROUND. WE WERE THEN CLRED TO CROSS RWY 35C AND 35L TO TAXI TO THE RAMP. THERE IS TOO MUCH PRESSURE TO CROSS TOO MUCH TFC AT DFW. THE FREQUENCIES ARE TOO CROWDED AND IF YOU MISS A CALL, IT TAKES TOO LONG TO GET A WORD IN OVER THE CTLR'S SERIES OF CALLS. SUPPLEMENTAL INFO FROM ACN 543960: HEAVY RADIO TFC A MAJOR C0NTRIBUTOR. STOP/GO LIGHTS AT ALL INTERSECTIONS WOULD PRECLUDE THIS SORT OF CONFUSION AND COM BREAKDOWN. MULTIPLEXED RADIO FREQUENCIES THAT ARE 'CLIP PROOF' WOULD BE ADVISABLE AS WELL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: WHEN THE FO WAS HESITANT WITH THE CROSSING CLRNC THE CAPT STOPPED TO CONFIRM THE CLRNC TO CROSS. BY THAT TIME IT WAS TOO LATE. THE TWR HAD A CLR VIEW OF THE AREA AND INITIATED A GAR FOR THE ACFT ON FINAL FOR RWY 35C. THE CREW COULD NOT GET A WORD IN EDGE WISE, EVEN TO INFORM THE TWR THEY WERE OVER THE LINE. THE PLT QUESTIONS HAVING SO MUCH TFC THAT THE ACFT ARE NOT ABLE TO COM WITH THE TWR. HE CONTACTED THE TWR SUPVR WHEN HE GOT TO THE GATE. THE SUPVR HAD NOT HAD TIME TO REVIEW THE TAPES. THE PLT HAS HEARD NOTHING SINCE.

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.