Narrative:

I was working the west departure control sector at orlando TRACON, workload was moderate with departure, overflt and VFR aircraft. Small aircraft X was being vectored, around arrival traffic being worked on another frequency, at 7000 ft. I had, previous to the error, been stopping departure traffic at 6000 ft due to small aircraft X at 7000 ft. Normal climb altitude for this sector is 8000 ft (below arrival airspace). When air carrier Y checked in on initial contact, I climbed him to 8000 ft (out of habit) thinking I had issued 6000 ft (for separation from 7000 ft overflt). I issued traffic to both aircraft, small aircraft X reported air carrier Y in sight and was handed off to the next sector. As I observed air carrier Y climbing through 6000 ft, I told him he should be at 6000 ft, 'traffic 12 O'clock, 1 mi.' he advised me TCASII RA had told him to slow his rate of climb and advised me I had issued him 8000 ft. I told air carrier Y I thought I had issued him 6000 ft and continued the session, business as usual. My only comment, in this matter, is, I issue 8000 ft so often on this sector, that I issued it out of habit (even though I indicated 6000 ft on the flight progress strip), a human error.

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Original NASA ASRS Text

Title: ACR Y CLB THROUGH OCCUPIED ALT RECEIVED TCASII RA SLOW CLB HAD LTSS FROM SMA X. SYS ERROR.

Narrative: I WAS WORKING THE W DEP CTL SECTOR AT ORLANDO TRACON, WORKLOAD WAS MODERATE WITH DEP, OVERFLT AND VFR ACFT. SMA X WAS BEING VECTORED, AROUND ARR TFC BEING WORKED ON ANOTHER FREQ, AT 7000 FT. I HAD, PREVIOUS TO THE ERROR, BEEN STOPPING DEP TFC AT 6000 FT DUE TO SMA X AT 7000 FT. NORMAL CLB ALT FOR THIS SECTOR IS 8000 FT (BELOW ARR AIRSPACE). WHEN ACR Y CHKED IN ON INITIAL CONTACT, I CLBED HIM TO 8000 FT (OUT OF HABIT) THINKING I HAD ISSUED 6000 FT (FOR SEPARATION FROM 7000 FT OVERFLT). I ISSUED TFC TO BOTH ACFT, SMA X RPTED ACR Y IN SIGHT AND WAS HANDED OFF TO THE NEXT SECTOR. AS I OBSERVED ACR Y CLBING THROUGH 6000 FT, I TOLD HIM HE SHOULD BE AT 6000 FT, 'TFC 12 O'CLOCK, 1 MI.' HE ADVISED ME TCASII RA HAD TOLD HIM TO SLOW HIS RATE OF CLB AND ADVISED ME I HAD ISSUED HIM 8000 FT. I TOLD ACR Y I THOUGHT I HAD ISSUED HIM 6000 FT AND CONTINUED THE SESSION, BUSINESS AS USUAL. MY ONLY COMMENT, IN THIS MATTER, IS, I ISSUE 8000 FT SO OFTEN ON THIS SECTOR, THAT I ISSUED IT OUT OF HABIT (EVEN THOUGH I INDICATED 6000 FT ON THE FLT PROGRESS STRIP), A HUMAN ERROR.

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.