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An MD11 wbound at FL260 climbed to FL310 then over pxv VOR turned right per flight plan into the path of a B767 on a parallel course direct to bum at FL310 resulting in a loss of separation.
| Attributes | |
| ACN | 638737 |
| Time | |
| Date | 200411 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | IN |
| Altitude | msl single value : 31000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zkc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-11 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | flight time total : 40 |
| ASRS Report | 638737 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar |
| Experience | controller time certified in position1 : 14 controller time certified in position2 : 6 flight time total : 20 |
| ASRS Report | 638732 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar/mode c aircraft equipment : tcas other controllera other controllerb other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X wbound at FL310. Aircraft Y wbound at FL260. Indy center releases control for turns on aircraft X. Aircraft X was given direct bum. Aircraft X advised he was going direct bum. Indy center releases control for higher on aircraft Y. Aircraft Y climbed to FL310. Aircraft X 10 NM west of pxv. Aircraft Y over pxv makes a approximately 40 degree right turn into the path of aircraft X. Aircraft Y was issued a 270 degree heading. Aircraft Y never acknowledges the turn for traffic. Trainer takes over. Supplemental information from acn 638732: aircraft X was wbound at FL310. Aircraft Y had just climbed from FL260 to FL310 and executed a right turn at the pxv VOR. The flight plan was via fix radial distances of vors. The turn was per flight plan but not expected by controller due to confusion of the flight plan elements. Both aircraft responded to TCASII RA.
Original NASA ASRS Text
Title: AN MD11 WBOUND AT FL260 CLBED TO FL310 THEN OVER PXV VOR TURNED R PER FLT PLAN INTO THE PATH OF A B767 ON A PARALLEL COURSE DIRECT TO BUM AT FL310 RESULTING IN A LOSS OF SEPARATION.
Narrative: ACFT X WBOUND AT FL310. ACFT Y WBOUND AT FL260. INDY CTR RELEASES CTL FOR TURNS ON ACFT X. ACFT X WAS GIVEN DIRECT BUM. ACFT X ADVISED HE WAS GOING DIRECT BUM. INDY CTR RELEASES CTL FOR HIGHER ON ACFT Y. ACFT Y CLBED TO FL310. ACFT X 10 NM W OF PXV. ACFT Y OVER PXV MAKES A APPROX 40 DEG R TURN INTO THE PATH OF ACFT X. ACFT Y WAS ISSUED A 270 DEG HDG. ACFT Y NEVER ACKNOWLEDGES THE TURN FOR TFC. TRAINER TAKES OVER. SUPPLEMENTAL INFO FROM ACN 638732: ACFT X WAS WBOUND AT FL310. ACFT Y HAD JUST CLBED FROM FL260 TO FL310 AND EXECUTED A R TURN AT THE PXV VOR. THE FLT PLAN WAS VIA FIX RADIAL DISTANCES OF VORS. THE TURN WAS PER FLT PLAN BUT NOT EXPECTED BY CTLR DUE TO CONFUSION OF THE FLT PLAN ELEMENTS. BOTH ACFT RESPONDED TO TCASII RA.
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.