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Hto controller fails to issue TA to closely spaced arrival helicopter's assuming they had each other in sight.
| Attributes | |
| ACN | 618431 |
| Time | |
| Date | 200405 |
| Day | Thu |
| Place | |
| Locale Reference | navaid : ito.vortac |
| State Reference | HI |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ito.tracon |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other vortac |
| Flight Phase | descent : approach |
| Route In Use | approach : traffic pattern arrival : vfr |
| Flight Plan | VFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : ito.tracon |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other vortac |
| Flight Phase | descent : approach |
| Route In Use | arrival : vfr |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller radar : 12 controller time certified in position1 : 2 controller time certified in position2 : 6 |
| ASRS Report | 618431 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 6000 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
These 2 helicopter's called inbound to my airspace 1 NM in-trail over the same visual reporting point. This company has their aircraft fly together. So, I assume these aircraft have each other in sight. In this case, that was not so. The rear copter was surprised I didn't issue TA's.
Original NASA ASRS Text
Title: HTO CTLR FAILS TO ISSUE TA TO CLOSELY SPACED ARR HELI'S ASSUMING THEY HAD EACH OTHER IN SIGHT.
Narrative: THESE 2 HELI'S CALLED INBOUND TO MY AIRSPACE 1 NM IN-TRAIL OVER THE SAME VISUAL RPTING POINT. THIS COMPANY HAS THEIR ACFT FLY TOGETHER. SO, I ASSUME THESE ACFT HAVE EACH OTHER IN SIGHT. IN THIS CASE, THAT WAS NOT SO. THE REAR COPTER WAS SURPRISED I DIDN'T ISSUE TA'S.
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.