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Tower controller described a conflict event when failing to insure the planned sequence was provided to pattern traffic.
| Attributes | |
| ACN | 1028013 |
| Time | |
| Date | 201208 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | Helicopter |
| Flight Phase | Descent |
| Route In Use | None |
| Flight Plan | VFR |
| Aircraft 2 | |
| Make Model Name | Helicopter |
| Flight Phase | Descent |
| Route In Use | None |
| Flight Plan | VFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types |
Narrative:
Helicopter X was 5 miles west of the field and requested a northwest arrival to the terminal. I approved the arrival and restricted a helicopter at or above 2;500 for traffic 10 miles north inbound to runway 8; the B717 descending though 2;500. Helicopter Y was also 5 west of the field requesting a northwest arrival. I told him to follow his company and gave him the same restriction; he said he had his company in sight. Helicopter Y then asked to change to a west arrival and I approved that. Then helicopter X asked to also change to a west arrival and I approved that. At this point helicopter Y was number 1 to the field and helicopter X was number 2. I failed to tell them this. From out the window it didn't look like a factor. Helicopter Y later said that his company passed right overhead and asked if there was a sequence. I should have let everybody know the sequence instead of just assuming that helicopter X had his company in sight and knew what the plan was.
Original NASA ASRS Text
Title: Tower Controller described a conflict event when failing to insure the planned sequence was provided to pattern traffic.
Narrative: Helicopter X was 5 miles west of the field and requested a northwest arrival to the terminal. I approved the arrival and restricted a helicopter at or above 2;500 for traffic 10 miles north inbound to Runway 8; the B717 descending though 2;500. Helicopter Y was also 5 west of the field requesting a northwest arrival. I told him to follow his company and gave him the same restriction; he said he had his company in sight. Helicopter Y then asked to change to a west arrival and I approved that. Then Helicopter X asked to also change to a west arrival and I approved that. At this point Helicopter Y was number 1 to the field and Helicopter X was number 2. I failed to tell them this. From out the window it didn't look like a factor. Helicopter Y later said that his company passed right overhead and asked if there was a sequence. I should have let everybody know the sequence instead of just assuming that Helicopter X had his company in sight and knew what the plan was.
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.