Narrative:

Air carrier X on bwi...ST2. Accepted handoff from washington approach control climbing to FL230. When aircraft checked on to center frequency (120.65 ldn sector) aircraft said leaving FL180 climbing to FL230 proceeding direct ldn. Traffic was light and I was marking my proposal strips when washington approach called and said where is air carrier Y going. I looked at the radar scope and air carrier X had turned 90 degrees south of course. I told the aircraft to fly heading 300 degrees. He responded what is going on giving him a 90 degree turn. I asked where is he proceeding to and he said ldn, very huffy! I looked at the controller chart and saw that fak VORTAC, frequency 113.3 is about 90 degree south of ldn, frequency 114.3. I asked the pilot does 'tune and identify' mean anything. A few moments passed and the pilot came back and said 'sorry.' no separation was lost nor airspace violation. (My sector was combined up with the csn sector or he would of violated the csn airspace).

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Original NASA ASRS Text

Title: ACR X TUNED WRONG FREQ PROCEEDING DIRECT WRONG VOR. PLTDEV. NON ADHERENCE WITH ATC CLRNC INSTRUCTION.

Narrative: ACR X ON BWI...ST2. ACCEPTED HDOF FROM WASHINGTON APCH CTL CLBING TO FL230. WHEN ACFT CHKED ON TO CTR FREQ (120.65 LDN SECTOR) ACFT SAID LEAVING FL180 CLBING TO FL230 PROCEEDING DIRECT LDN. TFC WAS LIGHT AND I WAS MARKING MY PROPOSAL STRIPS WHEN WASHINGTON APCH CALLED AND SAID WHERE IS ACR Y GOING. I LOOKED AT THE RADAR SCOPE AND ACR X HAD TURNED 90 DEGS S OF COURSE. I TOLD THE ACFT TO FLY HDG 300 DEGS. HE RESPONDED WHAT IS GOING ON GIVING HIM A 90 DEG TURN. I ASKED WHERE IS HE PROCEEDING TO AND HE SAID LDN, VERY HUFFY! I LOOKED AT THE CTLR CHART AND SAW THAT FAK VORTAC, FREQ 113.3 IS ABOUT 90 DEG S OF LDN, FREQ 114.3. I ASKED THE PLT DOES 'TUNE AND IDENT' MEAN ANYTHING. A FEW MOMENTS PASSED AND THE PLT CAME BACK AND SAID 'SORRY.' NO SEPARATION WAS LOST NOR AIRSPACE VIOLATION. (MY SECTOR WAS COMBINED UP WITH THE CSN SECTOR OR HE WOULD OF VIOLATED THE CSN AIRSPACE).

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.