|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : fra|
|Altitude||msl bound lower : 20000|
msl bound upper : 20000
|Controlling Facilities||artcc : zoa|
|Operator||common carrier : air carrier|
|Make Model Name||Large Transport, Low Wing, 3 Turbojet Eng|
|Flight Phase||climbout : intermediate altitude|
|Make Model Name||Fighter|
|Flight Phase||cruise other|
|Affiliation||government : faa|
|Function||controller : radar|
|Qualification||controller : radar|
|Experience||controller radar : 15|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Anomaly||conflict : airborne less severe|
non adherence : published procedure
non adherence : required legal separation
|Independent Detector||atc equipment other atc equipment : unspecified|
|Resolutory Action||none taken : anomaly accepted|
|Miss Distance||horizontal : 15000|
vertical : 0
|Primary Problem||ATC Human Performance|
|Air Traffic Incident||Operational Error|
Large transport X left fresno on a short flight to den. I was the controller involved. A flight of 3 fgt Y's were on a flight from lemoore NAS to fallon NAS at 20000'. Large transport X came over to me from fresno approach climbing to 10000'. I cleared the large transport X to 19000', but my xmissions were blocked by someone keying my frequencys. I attempted and finally succeeded in getting the frequencys unblocked, and with the traffic vol building, I hurriedly cleared large transport X to 23000' thinking 19000'. I quoted the traffic to large transport X. He got them in sight and proceeded to climb through their altitude. At no time did the large transport X question my actions. But I failed to separate him from the fgt Y as per regulations.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR CLIMBED AN LGT THROUGH ALT OCCUPIED BY FLT OF 3 FGTS WITH LESS THAN STANDARD SEPARATION.
Narrative: LGT X LEFT FRESNO ON A SHORT FLT TO DEN. I WAS THE CTLR INVOLVED. A FLT OF 3 FGT Y'S WERE ON A FLT FROM LEMOORE NAS TO FALLON NAS AT 20000'. LGT X CAME OVER TO ME FROM FRESNO APCH CLBING TO 10000'. I CLRED THE LGT X TO 19000', BUT MY XMISSIONS WERE BLOCKED BY SOMEONE KEYING MY FREQS. I ATTEMPTED AND FINALLY SUCCEEDED IN GETTING THE FREQS UNBLOCKED, AND WITH THE TFC VOL BUILDING, I HURRIEDLY CLRED LGT X TO 23000' THINKING 19000'. I QUOTED THE TFC TO LGT X. HE GOT THEM IN SIGHT AND PROCEEDED TO CLB THROUGH THEIR ALT. AT NO TIME DID THE LGT X QUESTION MY ACTIONS. BUT I FAILED TO SEPARATE HIM FROM THE FGT Y AS PER REGS.
Data retrieved from NASA's ASRS site as of August 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.