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Air carrier X and Y climb to same altitude had near midair collision less than standard separation. System error. Air carrier X TCASII RA evasive action taken.
| Attributes | |
| ACN | 246867 |
| Time | |
| Date | 199307 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ggt |
| State Reference | NY |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : on vectors enroute airway : syr |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller radar : 17 |
| ASRS Report | 246867 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure non adherence : required legal separation other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | faa : investigated |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Air carrier X departs runway 28 at syr and is turned left to 180 degrees and climbed to 10000. Air carrier X is then turned to 150 degrees and given direct ggt. Air carrier Y departs runway 28 and is given a 180 degree heading and climbed to 10000. Air carrier Y is then turned to 120 degrees and told to join V-483. The plan was for air carrier Y to go behind air carrier X and join the airway but for some reason (winds aloft?) the air carrier Y track was more southeasterly then planned. I turned air carrier Y to 110 degrees to compensate, but this did not help and air carrier Y continued toward track. I finally had to turn air carrier Y to 090 degrees and descend air carrier X to 9000 to keep separation. However, this did not prevent loss of separation. Also air carrier X received an RA on his TCASII.
Original NASA ASRS Text
Title: ACR X AND Y CLB TO SAME ALT HAD NMAC LTSS. SYS ERROR. ACR X TCASII RA EVASIVE ACTION TAKEN.
Narrative: ACR X DEPARTS RWY 28 AT SYR AND IS TURNED L TO 180 DEGS AND CLBED TO 10000. ACR X IS THEN TURNED TO 150 DEGS AND GIVEN DIRECT GGT. ACR Y DEPARTS RWY 28 AND IS GIVEN A 180 DEG HDG AND CLBED TO 10000. ACR Y IS THEN TURNED TO 120 DEGS AND TOLD TO JOIN V-483. THE PLAN WAS FOR ACR Y TO GO BEHIND ACR X AND JOIN THE AIRWAY BUT FOR SOME REASON (WINDS ALOFT?) THE ACR Y TRACK WAS MORE SOUTHEASTERLY THEN PLANNED. I TURNED ACR Y TO 110 DEGS TO COMPENSATE, BUT THIS DID NOT HELP AND ACR Y CONTINUED TOWARD TRACK. I FINALLY HAD TO TURN ACR Y TO 090 DEGS AND DSND ACR X TO 9000 TO KEEP SEPARATION. HOWEVER, THIS DID NOT PREVENT LOSS OF SEPARATION. ALSO ACR X RECEIVED AN RA ON HIS TCASII.
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.