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Very close proximity between small aircraft on takeoff and small aircraft making evasive go around. Operational error and near midair collision.
| Attributes | |
| ACN | 98744 |
| Time | |
| Date | 198811 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : toa |
| State Reference | CA |
| Altitude | agl bound lower : 50 agl bound upper : 50 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : toa |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | landing : go around landing other other |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | climbout : takeoff ground : holding |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller non radar : 5 |
| ASRS Report | 98774 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Events | |
| Anomaly | conflict : nmac non adherence : required legal separation other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action none taken : insufficient time other |
| Consequence | Other |
| Miss Distance | horizontal : 400 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Intra Facility Coordination Failure |
Narrative:
I was working local control 1, a newly checked out controller was working local controller 2, the local 2 controller had small aircraft X on final for my runway. I had small aircraft Y in position for departure on the same runway. The aircraft on final went around the other aircraft departed. There was a minimum of sep. The contributing factors were high vol traffic for both controllers and it was easy to be distracted, which caused a coordination error. A possible solution might be not to allow newly checked out controllers to work positions that are so dependent upon each other. Another solution would be for the area supervisor to be in the tower cabin attendant to provide assistance during high vol traffic.
Original NASA ASRS Text
Title: VERY CLOSE PROX BETWEEN SMA ON TKOF AND SMA MAKING EVASIVE GO AROUND. OPERATIONAL ERROR AND NMAC.
Narrative: I WAS WORKING LCL CTL 1, A NEWLY CHKED OUT CTLR WAS WORKING LCL CTLR 2, THE LCL 2 CTLR HAD SMA X ON FINAL FOR MY RWY. I HAD SMA Y IN POS FOR DEP ON THE SAME RWY. THE ACFT ON FINAL WENT AROUND THE OTHER ACFT DEPARTED. THERE WAS A MINIMUM OF SEP. THE CONTRIBUTING FACTORS WERE HIGH VOL TFC FOR BOTH CTLRS AND IT WAS EASY TO BE DISTRACTED, WHICH CAUSED A COORD ERROR. A POSSIBLE SOLUTION MIGHT BE NOT TO ALLOW NEWLY CHKED OUT CTLRS TO WORK POSITIONS THAT ARE SO DEPENDENT UPON EACH OTHER. ANOTHER SOLUTION WOULD BE FOR THE AREA SUPVR TO BE IN THE TWR CAB TO PROVIDE ASSISTANCE DURING HIGH VOL TFC.
Data retrieved from NASA's ASRS site as of August 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.