A320, Singapore Changi Singapore, 2021

A320, Singapore Changi Singapore, 2021

Summary

On 27 July 2021, an Airbus A320 departed uneventfully at night from runway 20L at Changi as cleared despite the crew observing that runway lighting was not as they expected. The Investigation concluded that the runway had been completely unlit and that it was likely that both the pilots and the controller involved had been affected by ‘expectation bias’ in respect of their perception that the lighting had been either as normal (the controller) or partially on (the pilots). Some issues with controller direct or display visibility of lighting status were also identified.

Description

On 27 July 2021, an Airbus A320 (9V-JSM) being operated by JetStar Asia on a scheduled international passenger flight from Singapore Changi to Jakarta Soekarno-Hatta took off uneventfully from runway 20L in normal night visibility despite crew recognition that some runway lighting was not on. ATC were not advised of this by the crew until after the flight was airborne after which all lighting was selected on.

Investigation

Once advised of the event more than 24 hours after it had occurred, the Singapore Transport Safety Investigation Bureau (TSIB) began an Investigation into the circumstances. By this time, relevant data from the aircraft CVR had been overwritten but relevant CCTV footage was available. 

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