After the flight crew of a DC9 flew 45 mi on a direct course to a VOR, ATC intervened and advised that they had been cleared to another VOR. However, the flight crew read back the clearance, which ATC did not dispute, and another aircraft also overheard ATC giving the course flown.

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Attributes
ACN	402550
Time
Date	199805
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : dqo
State Reference	DE
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc tower : pwk
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 22500 flight time type : 1200
ASRS Report	402550
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation other

Narrative:

Over dqo, dca controller cleared us 'direct to acy VOR.' proceeding toward acy, at 45 DME, controller advised that we had been cleared to sie VOR. Both pilots confirmed that clearance was to acy, that was what was read back to controller. Also, other aircraft also confirmed that they heard clearance to 'acy.'

Original NASA ASRS Text

Title: AFTER THE FLC OF A DC9 FLEW 45 MI ON A DIRECT COURSE TO A VOR, ATC INTERVENED AND ADVISED THAT THEY HAD BEEN CLRED TO ANOTHER VOR. HOWEVER, THE FLC READ BACK THE CLRNC, WHICH ATC DID NOT DISPUTE, AND ANOTHER ACFT ALSO OVERHEARD ATC GIVING THE COURSE FLOWN.

Narrative: OVER DQO, DCA CTLR CLRED US 'DIRECT TO ACY VOR.' PROCEEDING TOWARD ACY, AT 45 DME, CTLR ADVISED THAT WE HAD BEEN CLRED TO SIE VOR. BOTH PLTS CONFIRMED THAT CLRNC WAS TO ACY, THAT WAS WHAT WAS READ BACK TO CTLR. ALSO, OTHER ACFT ALSO CONFIRMED THAT THEY HEARD CLRNC TO 'ACY.'

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.