The Boeing 737 jet – which was carrying 67 passengers and six crew – was flying into the Scottish airport from Majorca in September last year when air traffic controllers asked for a landing delay.
According to a report issued by The Air Accidents Investigation Branch (AAIB), the aircraft initially climbed and then descended for 57 seconds before action was taken.
The report said crew likely became "overloaded" by their high workload during the go-around. The AAIB said it was a "serious" incident and the crew’s lack of flying hours during the pandemic was one of a combination of factors that led to them not noticing the descent. The aircraft landed safely.