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Air carrier made a turn on course resulting in less than standard separation with a military aircraft.
| Attributes | |
| ACN | 188496 |
| Time | |
| Date | 199109 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ric |
| State Reference | VA |
| Altitude | msl bound lower : 24000 msl bound upper : 24500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zdc |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 188496 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X, ric to ord and military Y an mlt lfi to evv. Military Y was at FL240 heading 310 degree on a vector to mol. (Mol VOR OTS). I took a handoff on air carrier X climbing to FL200. Air carrier X was tracking in a westerly direction. I pointed air carrier X out to appropriate sector and got permission to climb. Climbed air carrier X to FL230 and put halo on target so I could climb when clear of military Y at FL240. When military Y was observed outside of the halo I climbed the air carrier X to FL270. About the time the aircraft started climbing it turned towards mol. This caused the aircraft to start converging instead of continuing to diverge. I turned air carrier X 'immediately' to heading 270. When aircraft were clear of each other again I handed air carrier X off and issued radar vector to rejoin filed route. I had a visitor observing at the sector at the time. I should have made myself more cognizant of the fact that air carrier X was due to make a turn and not continue on a westerly heading. There were only 2 aircraft in the sector at the time. I didn't have the flight progress strip on air carrier X yet. I should have checked the route of intended flight prior to issuing climb clearance.
Original NASA ASRS Text
Title: ACR MADE A TURN ON COURSE RESULTING IN LTSS WITH A MIL ACFT.
Narrative: ACR X, RIC TO ORD AND MIL Y AN MLT LFI TO EVV. MIL Y WAS AT FL240 HDG 310 DEG ON A VECTOR TO MOL. (MOL VOR OTS). I TOOK A HDOF ON ACR X CLBING TO FL200. ACR X WAS TRACKING IN A WESTERLY DIRECTION. I POINTED ACR X OUT TO APPROPRIATE SECTOR AND GOT PERMISSION TO CLB. CLBED ACR X TO FL230 AND PUT HALO ON TARGET SO I COULD CLB WHEN CLR OF MIL Y AT FL240. WHEN MIL Y WAS OBSERVED OUTSIDE OF THE HALO I CLBED THE ACR X TO FL270. ABOUT THE TIME THE ACFT STARTED CLBING IT TURNED TOWARDS MOL. THIS CAUSED THE ACFT TO START CONVERGING INSTEAD OF CONTINUING TO DIVERGE. I TURNED ACR X 'IMMEDIATELY' TO HDG 270. WHEN ACFT WERE CLR OF EACH OTHER AGAIN I HANDED ACR X OFF AND ISSUED RADAR VECTOR TO REJOIN FILED RTE. I HAD A VISITOR OBSERVING AT THE SECTOR AT THE TIME. I SHOULD HAVE MADE MYSELF MORE COGNIZANT OF THE FACT THAT ACR X WAS DUE TO MAKE A TURN AND NOT CONTINUE ON A WESTERLY HDG. THERE WERE ONLY 2 ACFT IN THE SECTOR AT THE TIME. I DIDN'T HAVE THE FLT PROGRESS STRIP ON ACR X YET. I SHOULD HAVE CHKED THE RTE OF INTENDED FLT PRIOR TO ISSUING CLB CLRNC.
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.