Narrative:

First aircraft C172 80-100 KTS navigating on airway direct ene VOR. Adjacent facility apreq for 5000 ft reference opposite direction traffic at 6000 ft pilot was still requesting and filed for 7000 ft. Traffic at the sector was moderate with occasionally difficult complexity. Once aircraft #1 passed the 6000 ft traffic, he was climbed to his requested altitude of 7000 ft. At some point. I evidently accepted the handoff on aircraft #2, a PA60, 180 KTS plus or minus, at 7000 ft. Aircraft #2 at time of handoff was approximately 5 mi southwest of aircraft #1 destined to an airport north northwest of his position. I became busy again with other traffic at primary airport. When aircraft #2 made initial contact he requested to go direct to destination airport (B20). 3 or 4 data blocks were overlapped. It appeared aircraft #2 was below #1. So I approved the turn. Pilot advised he would delay the turn due to traffic off his left at the same altitude. Both aircraft were at 7000 ft, 1 1/4 mi apart. I told aircraft #2 to maintain visual separation with aircraft #1, to descend and maintain 5000 ft direct B20. I believe the sole cause of the operational error was my affliction with meniere's disease. See attached copy of my statement sent to the FAA and attaches copy of doctor's statement.

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Original NASA ASRS Text

Title: OPERROR BTWN UGA X AND UGA Y.

Narrative: FIRST ACFT C172 80-100 KTS NAVING ON AIRWAY DIRECT ENE VOR. ADJACENT FACILITY APREQ FOR 5000 FT REF OPPOSITE DIRECTION TFC AT 6000 FT PLT WAS STILL REQUESTING AND FILED FOR 7000 FT. TFC AT THE SECTOR WAS MODERATE WITH OCCASIONALLY DIFFICULT COMPLEXITY. ONCE ACFT #1 PASSED THE 6000 FT TFC, HE WAS CLBED TO HIS REQUESTED ALT OF 7000 FT. AT SOME POINT. I EVIDENTLY ACCEPTED THE HDOF ON ACFT #2, A PA60, 180 KTS PLUS OR MINUS, AT 7000 FT. ACFT #2 AT TIME OF HDOF WAS APPROX 5 MI SW OF ACFT #1 DESTINED TO AN ARPT N NW OF HIS POS. I BECAME BUSY AGAIN WITH OTHER TFC AT PRIMARY ARPT. WHEN ACFT #2 MADE INITIAL CONTACT HE REQUESTED TO GO DIRECT TO DEST ARPT (B20). 3 OR 4 DATA BLOCKS WERE OVERLAPPED. IT APPEARED ACFT #2 WAS BELOW #1. SO I APPROVED THE TURN. PLT ADVISED HE WOULD DELAY THE TURN DUE TO TFC OFF HIS L AT THE SAME ALT. BOTH ACFT WERE AT 7000 FT, 1 1/4 MI APART. I TOLD ACFT #2 TO MAINTAIN VISUAL SEPARATION WITH ACFT #1, TO DSND AND MAINTAIN 5000 FT DIRECT B20. I BELIEVE THE SOLE CAUSE OF THE OPERATIONAL ERROR WAS MY AFFLICTION WITH MENIERE'S DISEASE. SEE ATTACHED COPY OF MY STATEMENT SENT TO THE FAA AND ATTACHES COPY OF DOCTOR'S STATEMENT.

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.