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ZSU controller described a loss of separation event involving two departures with an overtake situation.
| Attributes | |
| ACN | 933368 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZSU.ARTCC |
| State Reference | PR |
| Aircraft 1 | |
| Make Model Name | Metro Undifferentiated or Other Model |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Caravan Undifferentiated |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach Departure |
| Qualification | Air Traffic Control Fully Certified |
| Person 2 | |
| Function | Departure Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Track / Heading All Types |
Narrative:
A C208 was on route 2 climbing to 10;000. A SW4 filed also route 2 and was climbing to 10;000. I coordinated with the center for them to turn the C208 to the south and the SW4 on a 080 heading since the SW4 was a faster aircraft catching up with the C208. I assigned 080 heading to the SW4. When I checked again; it seemed like the aircraft did not turn. I assigned a 070 heading. When I looked back; it appeared like the SW4 was flying a 100 heading; very close to the C208. I turned the SW4 to a 050 heading. I think they had 900 ft between them. Finally I noticed the SW4 turn. Recommendation; I do not know if there was a problem with the SW4 instruments now that I think about it. We had 2 incidents with the same aircraft. I coordinated the same instructions I always do when I handle these types of situations; but this time it did not work. I should have kept my eyes longer on this the SW4; but I had other things to do while working the R5 position.
Original NASA ASRS Text
Title: ZSU Controller described a loss of separation event involving two departures with an overtake situation.
Narrative: A C208 was on Route 2 climbing to 10;000. A SW4 filed also Route 2 and was climbing to 10;000. I coordinated with the Center for them to turn the C208 to the south and the SW4 on a 080 heading since the SW4 was a faster aircraft catching up with the C208. I assigned 080 heading to the SW4. When I checked again; it seemed like the aircraft did not turn. I assigned a 070 heading. When I looked back; it appeared like the SW4 was flying a 100 heading; very close to the C208. I turned the SW4 to a 050 heading. I think they had 900 FT between them. Finally I noticed the SW4 turn. Recommendation; I do not know if there was a problem with the SW4 instruments now that I think about it. We had 2 incidents with the same aircraft. I coordinated the same instructions I always do when I handle these types of situations; but this time it did not work. I should have kept my eyes longer on this the SW4; but I had other things to do while working the R5 position.
Data retrieved from NASA's ASRS site as of April 2012 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.