Air carrier has clearance confusion at dfw.

Attributes
ACN	457440
Time
Date	199912
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	descent : approach
Route In Use	arrival : on vectors arrival star : wilbur 2
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	457440
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
ASRS Report	457439
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	ATC Facility ATC Human Performance Airspace Structure Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Byp arrival, changed clearance to wilbur 2 with what we understood to be 170 degree heading out of addvl for rv. At TTT 39 DME ATC asks heading and we reply 170 degrees assigned. His response was, 'you're lost, turn right 270 degrees, I gave you 235 degree heading out of addvl.' even though it was a very saturated time, attempting to locate a TCASII TA, an arrival and runway change, and IOE training, I honestly don't believe the mistake was made on our part.

Original NASA ASRS Text

Title: ACR HAS CLRNC CONFUSION AT DFW.

Narrative: BYP ARR, CHANGED CLRNC TO WILBUR 2 WITH WHAT WE UNDERSTOOD TO BE 170 DEG HDG OUT OF ADDVL FOR RV. AT TTT 39 DME ATC ASKS HEADING AND WE REPLY 170 DEGS ASSIGNED. HIS RESPONSE WAS, 'YOU'RE LOST, TURN R 270 DEGS, I GAVE YOU 235 DEG HDG OUT OF ADDVL.' EVEN THOUGH IT WAS A VERY SATURATED TIME, ATTEMPTING TO LOCATE A TCASII TA, AN ARR AND RWY CHANGE, AND IOE TRAINING, I HONESTLY DON'T BELIEVE THE MISTAKE WAS MADE ON OUR PART.

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.