Narrative:

I was providing training (radar training) at R58; saint augustine sector. WX was impacting the sector; causing numerous deviations. The sector feeding us was allowing the aircraft to deviate both east and west around the cell and then converge south of the cell. I asked for a d-side; but one was not provided until after the situation. When air carrier Y checked in; I noticed the convergence with air carrier X. The trainee issued a clearance for air carrier X to 'maintain 310.' the pilot read back 'roger; 310 KTS.' I then took over the position and cleared the air carrier X to 'fly heading 120 degrees; maintain FL310.' air carrier X rogered the clearance. I descended the air carrier Y from FL300 to FL280. After scanning the rest of the sector; I noticed that the air carrier X was not turning as cleared. I issued a turn to air carrier Y to maintain the separation. After listening to the tapes; I realized the air carrier X took approximately 1 min to begin his turn. On frequency; he reported leveling FL310 and commencing a turn to a 120 degree heading. Had air carrier X turned when cleared; the separation between him and air carrier Y would have been maintained. Supplemental information from acn 713392: I asked ZJX for a right deviation for a build-up ahead. The 10 degree deviation to the right was approved. As we were going around the build-up; we were issued a descent to FL260. I read the clearance back and asked him to verify the descent to FL260 and re responded 'roger; 260.' (the descent was earlier than expected.) we started the descent. Passing FL305; another controller took over and issued FL310 and a left turn to a 120 degree heading. I read back the clearance and verified it again. The controller confirmed FL310 and a 120 degree heading. We climbed back to FL310 and turned to a heading of 120 degrees.

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Original NASA ASRS Text

Title: ZJX CTLR PROVIDING OJT EXPERIENCED LOSS OF SEPARATION AT FL307 DURING WX DEV MANEUVERS WHEN ACR WAS SLOW TO RESPOND TO CORRECTIVE INSTRUCTIONS.

Narrative: I WAS PROVIDING TRAINING (RADAR TRAINING) AT R58; SAINT AUGUSTINE SECTOR. WX WAS IMPACTING THE SECTOR; CAUSING NUMEROUS DEVS. THE SECTOR FEEDING US WAS ALLOWING THE ACFT TO DEVIATE BOTH E AND W AROUND THE CELL AND THEN CONVERGE S OF THE CELL. I ASKED FOR A D-SIDE; BUT ONE WAS NOT PROVIDED UNTIL AFTER THE SITUATION. WHEN ACR Y CHKED IN; I NOTICED THE CONVERGENCE WITH ACR X. THE TRAINEE ISSUED A CLRNC FOR ACR X TO 'MAINTAIN 310.' THE PLT READ BACK 'ROGER; 310 KTS.' I THEN TOOK OVER THE POS AND CLRED THE ACR X TO 'FLY HDG 120 DEGS; MAINTAIN FL310.' ACR X ROGERED THE CLRNC. I DSNDED THE ACR Y FROM FL300 TO FL280. AFTER SCANNING THE REST OF THE SECTOR; I NOTICED THAT THE ACR X WAS NOT TURNING AS CLRED. I ISSUED A TURN TO ACR Y TO MAINTAIN THE SEPARATION. AFTER LISTENING TO THE TAPES; I REALIZED THE ACR X TOOK APPROX 1 MIN TO BEGIN HIS TURN. ON FREQ; HE RPTED LEVELING FL310 AND COMMENCING A TURN TO A 120 DEG HDG. HAD ACR X TURNED WHEN CLRED; THE SEPARATION BTWN HIM AND ACR Y WOULD HAVE BEEN MAINTAINED. SUPPLEMENTAL INFO FROM ACN 713392: I ASKED ZJX FOR A R DEV FOR A BUILD-UP AHEAD. THE 10 DEG DEV TO THE R WAS APPROVED. AS WE WERE GOING AROUND THE BUILD-UP; WE WERE ISSUED A DSCNT TO FL260. I READ THE CLRNC BACK AND ASKED HIM TO VERIFY THE DSCNT TO FL260 AND RE RESPONDED 'ROGER; 260.' (THE DSCNT WAS EARLIER THAN EXPECTED.) WE STARTED THE DSCNT. PASSING FL305; ANOTHER CTLR TOOK OVER AND ISSUED FL310 AND A L TURN TO A 120 DEG HDG. I READ BACK THE CLRNC AND VERIFIED IT AGAIN. THE CTLR CONFIRMED FL310 AND A 120 DEG HDG. WE CLBED BACK TO FL310 AND TURNED TO A HDG OF 120 DEGS.

Data retrieved from NASA's ASRS site as of January 2009 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.