B738 / F100, Geneva Switzerland, 2014

B738 / F100, Geneva Switzerland, 2014

Summary

On 31 March 2014, a Geneva TWR controller believed it was possible to clear a light aircraft for an intersection take off ahead of a Fokker 100 already lining up on the same runway at full length and gave that clearance with a Boeing 737-800 6nm from touchdown on the same runway. Concluding that intervention was not necessary despite the activation of loss of separation alerts, the controller allowed the 737 to continue, issuing a landing clearance whilst the F100 was still on the runway. Sixteen seconds later, the 737 touched down three seconds after the F100 had become airborne.

Description

On 31 March 2014, a Boeing 737-800 (TC-JGV) being operated by Turkish Airlines on a scheduled passenger flight from Istanbul Atatürk to Geneva as THY1QM in accordance with ATC instructions touched down on runway 05 at destination three seconds after a Fokker 100 (OE-LVL) being operated by Tyrolean Airlines on a scheduled passenger flight for Austrian Airlines from Geneva to Vienna as AUA 582W had taken off from the same runway. Separation between the two aircraft along the runway was reduced to just over 50% of the prescribed minimum of 2,400 metres.

Investigation

An Investigation was carried out by the Swiss Transportation Safety Investigation Board (STSB). Recorded ATC data relevant to the Investigation were recovered and were sufficient to inform the Investigation without recourse to the FDR from either of the aircraft directly involved. The CVR data relevant to the Investigation had been overwritten on both these aircraft. The prevailing weather conditions were good and had no bearing on the investigated conflict. The runway and its approach are situated within the Class 'D' airspace of the Geneva Control Zone.

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