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ZNY controller described a loss of separation event when one of the aircraft involved did not receive a frequency change in time to be effective.
| Attributes | |
| ACN | 1123007 |
| Time | |
| Date | 201310 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZNY.ARTCC |
| State Reference | NY |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | MD-88 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict |
Narrative:
A B737-700 is typically given a clearance to cross 50 south dpk level 250 by ZDC cyn sector. A md-88 given cross 65 west hto level 270; started descending out of 310. Heard another controller mention about 2 aircraft at FL450; ranged out to look as it was likely that one or both would transit sector 56. Conflict alert began to flash between the B737; (still level at 290) and the md-88 and I asked the B737 if he had a restriction; he/she did not respond. Shouted on 99 line to 'descend B737 please!' turned the md-88 to 010 heading with expedite turn; first asked to stop at FL300; not possible so I instructed the md-88 to just stop descent. ZDC; for whatever reason; kept communications with the B737; preventing me from doing anything with the aircraft. The md-88 leveled at 296 and missed the B737 by several miles at least. Recommendation; treat saturday night like any other night of the week and manage traffic accordingly.
Original NASA ASRS Text
Title: ZNY Controller described a loss of separation event when one of the aircraft involved did not receive a frequency change in time to be effective.
Narrative: A B737-700 is typically given a clearance to cross 50 South DPK level 250 by ZDC CYN Sector. A MD-88 given cross 65 West HTO level 270; started descending out of 310. Heard another Controller mention about 2 aircraft at FL450; ranged out to look as it was likely that one or both would transit Sector 56. Conflict Alert began to flash between the B737; (still level at 290) and the MD-88 and I asked the B737 if he had a restriction; he/she did not respond. Shouted on 99 line to 'DESCEND B737 PLEASE!' Turned the MD-88 to 010 heading with expedite turn; first asked to stop at FL300; not possible so I instructed the MD-88 to just stop descent. ZDC; for whatever reason; kept communications with the B737; preventing me from doing anything with the aircraft. The MD-88 leveled at 296 and missed the B737 by several miles at least. Recommendation; treat Saturday night like any other night of the week and manage traffic accordingly.
Data retrieved from NASA's ASRS site as of July 2013 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.