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A DHC6300 float plane pilot reports a near miss at 500 ft approaching stt after ATC failed to advise them of a departing helicopter.
| Attributes | |
| ACN | 732950 |
| Time | |
| Date | 200703 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : stt.airport |
| State Reference | VI |
| Altitude | agl single value : 500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Twin Otter DHC-6-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : traffic pattern |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : stt.tower |
| Operator | other |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : takeoff |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 4000 flight time type : 2500 |
| ASRS Report | 732950 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | other flight crewa other flight crewb other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Miss Distance | horizontal : 200 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
A near miss occurred when a seaplane; twin otter on floats; making an approach to landing in the charlotte amalie harbor flew directly over a helicopter departing cyril east king airport. The twin otter was operating with the TCAS deferred. Tower did not advise either aircraft of the other. I was the PF of the otter and the PNF advised me of the aircraft passing below us. We were at 500 ft AGL making a right turn to final. Moments later the helicopter reported a fixed wing aircraft flew just above. Tower acknowledged. Then the first officer stated that the traffic for the twin otter was no factor. I disagree with the first officer's statement. The helicopter was a factor and there was no option for evasive action which was appropriate.
Original NASA ASRS Text
Title: A DHC6300 FLOAT PLANE PILOT REPORTS A NEAR MISS AT 500 FT APCHING STT AFTER ATC FAILED TO ADVISE THEM OF A DEPARTING HELICOPTER.
Narrative: A NEAR MISS OCCURRED WHEN A SEAPLANE; TWIN OTTER ON FLOATS; MAKING AN APCH TO LNDG IN THE CHARLOTTE AMALIE HARBOR FLEW DIRECTLY OVER A HELI DEPARTING CYRIL E KING ARPT. THE TWIN OTTER WAS OPERATING WITH THE TCAS DEFERRED. TWR DID NOT ADVISE EITHER ACFT OF THE OTHER. I WAS THE PF OF THE OTTER AND THE PNF ADVISED ME OF THE ACFT PASSING BELOW US. WE WERE AT 500 FT AGL MAKING A R TURN TO FINAL. MOMENTS LATER THE HELI RPTED A FIXED WING ACFT FLEW JUST ABOVE. TWR ACKNOWLEDGED. THEN THE FO STATED THAT THE TFC FOR THE TWIN OTTER WAS NO FACTOR. I DISAGREE WITH THE FO'S STATEMENT. THE HELI WAS A FACTOR AND THERE WAS NO OPTION FOR EVASIVE ACTION WHICH WAS APPROPRIATE.
Data retrieved from NASA's ASRS site as of January 2009 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.