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Zjc controller experienced operational error at FL220 when wrong aircraft read back altitude assignment; WX deviation(south) a complicating factor.
| Attributes | |
| ACN | 790150 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zjx.artcc |
| State Reference | FL |
| Altitude | msl single value : 22000 |
| Environment | |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller radar : 19 controller time certified in position1 : 7 |
| ASRS Report | 790150 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 900 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X swbound at FL220 direct orl landing tpa. Aircraft Y climbing to FL230 nebound deviating around WX and into another sector. Aircraft Y issued an amended altitude of FL210. Aircraft Z read the clearance back. Then issued an amended altitude to aircraft Z FL210. Traffic issued to aircraft Y reference aircraft X at FL220 then switched frequency. During this time; WX was impacting sectors R57/R58. All aircraft were deviating or on assigned headings. Traffic was being worked by sector 57 in sector 58's airspace. Also many handoffs to mco TRACON had to be forced manually. The noise level was very high in the control room. Aircraft Y responded to an RA and went back down to FL210 before starting to climb again.
Original NASA ASRS Text
Title: ZJC CTLR EXPERIENCED OPERROR AT FL220 WHEN WRONG ACFT READ BACK ALT ASSIGNMENT; WX DEV(S) A COMPLICATING FACTOR.
Narrative: ACFT X SWBOUND AT FL220 DIRECT ORL LNDG TPA. ACFT Y CLBING TO FL230 NEBOUND DEVIATING AROUND WX AND INTO ANOTHER SECTOR. ACFT Y ISSUED AN AMENDED ALT OF FL210. ACFT Z READ THE CLRNC BACK. THEN ISSUED AN AMENDED ALT TO ACFT Z FL210. TFC ISSUED TO ACFT Y REF ACFT X AT FL220 THEN SWITCHED FREQ. DURING THIS TIME; WX WAS IMPACTING SECTORS R57/R58. ALL ACFT WERE DEVIATING OR ON ASSIGNED HDGS. TFC WAS BEING WORKED BY SECTOR 57 IN SECTOR 58'S AIRSPACE. ALSO MANY HDOFS TO MCO TRACON HAD TO BE FORCED MANUALLY. THE NOISE LEVEL WAS VERY HIGH IN THE CTL ROOM. ACFT Y RESPONDED TO AN RA AND WENT BACK DOWN TO FL210 BEFORE STARTING TO CLB AGAIN.
Data retrieved from NASA's ASRS site as of May 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.