Narrative:

I assumed operating position 17 min before occurrence during my last hour of assigned shift. I inherited a coordination procedure which I was both unfamiliar and uncomfortable with. (An IFR aircraft was holding at btv VORTAC at 3000 ft. Departures were being issued headings 150 degree, 170 degree, and 190 degree with 190 degree heading restr to 2000 ft for IFR or 2500 ft for VFR to protect holding aircraft. All southerly departures off btv are toward terrain.) traffic was varied and moderate to heavy. Throughout session I was working practice approachs, opposite direction approachs, combined sectors, through flts, and it was very hazy and hot. Air carrier X departed climbing to 2000 ft. As soon as holding traffic was no longer a factor I issued the normal climb to 10000 ft. Small aircraft Y was inbound from the south descending to 4000 ft heading towards VORTAC. When aircraft were about 5 NM and 1300 ft apart I noticed their proximity. Stopping climb/descent would be ineffective. I turned air carrier X 90 degrees right and small aircraft Y 40 degrees right. Air carrier X was TCASII equipped. He said TCASII called for climb rate which exceeded capability of the aircraft. In the future I will correct coordination procedures to ones which I'm familiar with as soon as possible after assuming position. Greater awareness of aircraft performance on hot, humid days (race here) wouldn't hurt.

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Original NASA ASRS Text

Title: ACR X HAD LTSS FROM SMA Y. SYS ERROR. ACR X TCASII RA CLB.

Narrative: I ASSUMED OPERATING POS 17 MIN BEFORE OCCURRENCE DURING MY LAST HR OF ASSIGNED SHIFT. I INHERITED A COORD PROC WHICH I WAS BOTH UNFAMILIAR AND UNCOMFORTABLE WITH. (AN IFR ACFT WAS HOLDING AT BTV VORTAC AT 3000 FT. DEPS WERE BEING ISSUED HDGS 150 DEG, 170 DEG, AND 190 DEG WITH 190 DEG HDG RESTR TO 2000 FT FOR IFR OR 2500 FT FOR VFR TO PROTECT HOLDING ACFT. ALL SOUTHERLY DEPS OFF BTV ARE TOWARD TERRAIN.) TFC WAS VARIED AND MODERATE TO HVY. THROUGHOUT SESSION I WAS WORKING PRACTICE APCHS, OPPOSITE DIRECTION APCHS, COMBINED SECTORS, THROUGH FLTS, AND IT WAS VERY HAZY AND HOT. ACR X DEPARTED CLBING TO 2000 FT. AS SOON AS HOLDING TFC WAS NO LONGER A FACTOR I ISSUED THE NORMAL CLB TO 10000 FT. SMA Y WAS INBOUND FROM THE S DSNDING TO 4000 FT HDG TOWARDS VORTAC. WHEN ACFT WERE ABOUT 5 NM AND 1300 FT APART I NOTICED THEIR PROX. STOPPING CLB/DSCNT WOULD BE INEFFECTIVE. I TURNED ACR X 90 DEGS R AND SMA Y 40 DEGS R. ACR X WAS TCASII EQUIPPED. HE SAID TCASII CALLED FOR CLB RATE WHICH EXCEEDED CAPABILITY OF THE ACFT. IN THE FUTURE I WILL CORRECT COORD PROCS TO ONES WHICH I'M FAMILIAR WITH ASAP AFTER ASSUMING POS. GREATER AWARENESS OF ACFT PERFORMANCE ON HOT, HUMID DAYS (RACE HERE) WOULDN'T HURT.

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.