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Air carrier large transport departing mynn experiences near midair collision with previously departed small aircraft Y.
| Attributes | |
| ACN | 144390 |
| Time | |
| Date | 199004 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mynn |
| State Reference | FO |
| Altitude | msl bound lower : 3500 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mynn |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Retractable Gear |
| Flight Phase | climbout : intermediate altitude climbout : takeoff cruise other |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 152 flight time total : 9338 flight time type : 438 |
| ASRS Report | 144390 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 500 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
We were cleared for takeoff from mynn runway 14 and told to fly runway heading to 4000' and to contact departure when airborne. After takeoff and through 3500' the crew noticed traffic off the right wing, small aircraft Y. Traffic appeared to be on a parallel track within 400-600' level at 4000'. Apparently, small aircraft Y took off before us and we rapidly overtook it. Neither the tower controller nor the departure controller advised us to the location of the traffic. When questioned, the departure controller mentioned that the tower controller should have advised us of the traffic. In a high density area with a mixture of IFR/VFR traffic low/high performance aircraft, vigilance on the part of all parties concerned is imperative!
Original NASA ASRS Text
Title: ACR LGT DEPARTING MYNN EXPERIENCES NMAC WITH PREVIOUSLY DEPARTED SMA Y.
Narrative: WE WERE CLRED FOR TKOF FROM MYNN RWY 14 AND TOLD TO FLY RWY HDG TO 4000' AND TO CONTACT DEP WHEN AIRBORNE. AFTER TKOF AND THROUGH 3500' THE CREW NOTICED TFC OFF THE R WING, SMA Y. TFC APPEARED TO BE ON A PARALLEL TRACK WITHIN 400-600' LEVEL AT 4000'. APPARENTLY, SMA Y TOOK OFF BEFORE US AND WE RAPIDLY OVERTOOK IT. NEITHER THE TWR CTLR NOR THE DEP CTLR ADVISED US TO THE LOCATION OF THE TFC. WHEN QUESTIONED, THE DEP CTLR MENTIONED THAT THE TWR CTLR SHOULD HAVE ADVISED US OF THE TFC. IN A HIGH DENSITY AREA WITH A MIXTURE OF IFR/VFR TFC LOW/HIGH PERFORMANCE ACFT, VIGILANCE ON THE PART OF ALL PARTIES CONCERNED IS IMPERATIVE!
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.