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ZNY controllers report of a loss of separation between two aircraft due to one aircraft slowing its speed to increase the climb rate.
| Attributes | |
| ACN | 1183144 |
| Time | |
| Date | 201406 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZNY.ARTCC |
| State Reference | NY |
| Aircraft 1 | |
| Make Model Name | Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Medium Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute Instructor |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 23 |
| Person 2 | |
| Function | Enroute Trainee |
| Qualification | Air Traffic Control Developmental |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
Training in progress. Trainee is a new radar trainee with 14 hours at his first sector. Hand off controller on duty; about to commence a relief briefing. Aircraft X was on a vector to establish a climb to FL320 and at 250 KIAS assigned. Aircraft Y was in level flight at FL240 westbound on J230 east of copes intersection. Aircraft X was given normal speed and resumed direct mxe to return to course; then switched to next frequency. Relief briefing commenced. Hand off and relieving controller were discussing heavy J75 restriction which was lightly confusing (other departure fixes were closed due weather and most southbound traffic was being routed J75; placing them over copes.) training controller had interjected a comment about it; and noticed aircraft X had flattened his climb to gain forward speed. Trainee turned aircraft Y left heading 240 to avoid; which the pilot did in a timely fashion (there was 10 miles at this point) and called receiving sector 09 to expedite aircraft X for 500 feet; but the convergence was too steep to maintain 5.0 and 1;000 feet with 100% certainty. There may have been a loss.greater vigilance by all parties during briefing.
Original NASA ASRS Text
Title: ZNY Controllers report of a loss of separation between two aircraft due to one aircraft slowing its speed to increase the climb rate.
Narrative: Training in progress. Trainee is a new radar trainee with 14 hours at his first sector. Hand off Controller on duty; about to commence a relief briefing. Aircraft X was on a vector to establish a climb to FL320 and at 250 KIAS assigned. Aircraft Y was in level flight at FL240 westbound on J230 east of COPES intersection. Aircraft X was given normal speed and resumed direct MXE to return to course; then switched to next frequency. Relief briefing commenced. Hand off and relieving Controller were discussing heavy J75 restriction which was lightly confusing (other departure fixes were closed due weather and most southbound traffic was being routed J75; placing them over COPES.) Training Controller had interjected a comment about it; and noticed Aircraft X had flattened his climb to gain forward speed. Trainee turned Aircraft Y left heading 240 to avoid; which the pilot did in a timely fashion (there was 10 miles at this point) and called receiving sector 09 to expedite Aircraft X for 500 feet; but the convergence was too steep to maintain 5.0 and 1;000 feet with 100% certainty. There may have been a loss.Greater vigilance by all parties during briefing.
Data retrieved from NASA's ASRS site 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.