E170/E120, San Francisco CA, USA 2007

E170/E120, San Francisco CA, USA 2007

Summary

On 26 May 2007, a Republic Airlines Embraer 170 taking off from runway 01L at San Francisco nearly collided with an aircraft which had just landed on intersecting runway 28R and come to a stop at the intersection. Both aircraft were operating in accordance with instructions to take off and land respectively issued by the same TWR controller. After an AMASS conflict alert issued 15 seconds in advance of the subsequent conflict, the controller involved instructed the aircraft on landing roll to  hold ,

Description

On 26 May 2007, an Embraer 170 being operated by Republic Airlines on a scheduled passenger flight from San Francisco to Los Angeles for Frontier AL taking off from runway 01L was obliged to closely overfly an Embraer 120 being operated by Skywest AL for United Express on a scheduled passenger flight from Modesto CA to San Francisco which had just landed on intersecting runway 28R and stopped on the intersection.

Investigation

An Investigation was carried out by the National Transportation Safety Board (USA) (NTSB) based upon radar and R/T recordings. It was noted that the TWR at San Francisco operates on a single VHF frequency and that the intersection where the conflict occurred was approximately 1860 metres from the landing runway threshold and approximately 1580 metres from the take off runway threshold. Daylight visibility had been good and had not been a factor in the incident.

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