Narrative:

Operational error occurred on a friday. I had been recovering from bronchitis the previous few days. The previous monday and tuesday were my regular days off. Wednesday I called in sick, having been prescribed medication forbronchitis. Thursday I came to work and advised the supervisor at XA00 am of my taking said prescription. I was advised by the assistant manager of facility (gso) that I had to not take the liquid medication for at least 24 hours before I worked on 'the boards' again. On this thursday my last dose of liquid medication was at XB15 am. I worked on data. I continued to take the antibiotic tablets as prescribed, 3 times daily. On friday I arrived at work. I advised the supervisor I had followed instructions about not taking liquid medication, so I could work as usual. Assigned south radar position combined with south satellite radar and south associate. Air carrier departed in my sector, soon to be in another sector. A flight check aircraft was VFR and wanted an IFR clearance. Between the air carrier jet, no radio contact, trying to ask others in the facility who he was talking to, and the flight check full route clearance, I had to read to myself where he was going because his flight strip was inconclusive. 2 other aircraft I had to vector to avoid obstructions and airspace. My attention was lost with 2 aircraft at 7000 ft. I feel the combination of all factors, including a lot of backgnd noise in the radar room (ie, people not using the override system to coordinate, they were just yelling across the room), having been sick and still not 100 percent physically well. I had not worked in the radar room in 4 days. There were 3 collision alerts activated for the C210 and C182. I only heard the last one.

Related reports:

Google
 

Original NASA ASRS Text

Title: C210 ON RADAR VECTOR SAME ALT HAD NMAC LTSS FROM C182. SYS ERROR.

Narrative: OPERROR OCCURRED ON A FRIDAY. I HAD BEEN RECOVERING FROM BRONCHITIS THE PREVIOUS FEW DAYS. THE PREVIOUS MONDAY AND TUESDAY WERE MY REGULAR DAYS OFF. WEDNESDAY I CALLED IN SICK, HAVING BEEN PRESCRIBED MEDICATION FORBRONCHITIS. THURSDAY I CAME TO WORK AND ADVISED THE SUPVR AT XA00 AM OF MY TAKING SAID PRESCRIPTION. I WAS ADVISED BY THE ASSISTANT MGR OF FACILITY (GSO) THAT I HAD TO NOT TAKE THE LIQUID MEDICATION FOR AT LEAST 24 HRS BEFORE I WORKED ON 'THE BOARDS' AGAIN. ON THIS THURSDAY MY LAST DOSE OF LIQUID MEDICATION WAS AT XB15 AM. I WORKED ON DATA. I CONTINUED TO TAKE THE ANTIBIOTIC TABLETS AS PRESCRIBED, 3 TIMES DAILY. ON FRIDAY I ARRIVED AT WORK. I ADVISED THE SUPVR I HAD FOLLOWED INSTRUCTIONS ABOUT NOT TAKING LIQUID MEDICATION, SO I COULD WORK AS USUAL. ASSIGNED S RADAR POS COMBINED WITH S SATELLITE RADAR AND S ASSOCIATE. ACR DEPARTED IN MY SECTOR, SOON TO BE IN ANOTHER SECTOR. A FLT CHK ACFT WAS VFR AND WANTED AN IFR CLRNC. BTWN THE ACR JET, NO RADIO CONTACT, TRYING TO ASK OTHERS IN THE FACILITY WHO HE WAS TALKING TO, AND THE FLT CHK FULL RTE CLRNC, I HAD TO READ TO MYSELF WHERE HE WAS GOING BECAUSE HIS FLT STRIP WAS INCONCLUSIVE. 2 OTHER ACFT I HAD TO VECTOR TO AVOID OBSTRUCTIONS AND AIRSPACE. MY ATTN WAS LOST WITH 2 ACFT AT 7000 FT. I FEEL THE COMBINATION OF ALL FACTORS, INCLUDING A LOT OF BACKGND NOISE IN THE RADAR ROOM (IE, PEOPLE NOT USING THE OVERRIDE SYS TO COORDINATE, THEY WERE JUST YELLING ACROSS THE ROOM), HAVING BEEN SICK AND STILL NOT 100 PERCENT PHYSICALLY WELL. I HAD NOT WORKED IN THE RADAR ROOM IN 4 DAYS. THERE WERE 3 COLLISION ALERTS ACTIVATED FOR THE C210 AND C182. I ONLY HEARD THE LAST ONE.

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.