A PILOT of a huge plane nearly crashed over Oxfordshire after spotting unexpected 'intruder'.

Pilots from a huge plane reported a ‘high risk’ near crash over Oxfordshire after their alarm system was triggered by a small aircraft.

A grey Voyager aircraft, which is an RAF air-to-air refuelling tanker that also acts as air transport, was alarmed after spotting an unexpected aircraft when taking off from Brize Norton RAF base on November 9 last year.

The Voyager pilot reported that their collision warning system was triggered by an 'intruder' - another aircraft, a Bulldog - travelling near them. 

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This is Oxfordshire: Diagram shows how close two planes were together, with flight paths nearly crossing.Diagram shows how close two planes were together, with flight paths nearly crossing.

The Bulldog, which is a small two-seat aircraft, was spotted by the Voyager's safety pilot as the plane began to enter a cloud slightly to the northwest.

There was no way to move out of the way if the flight paths were to converge, leading the pilots on board to fear a crash.

The Bulldog passed the plane 200m away.

Meanwhile, in the control room, the Brize Norton zone controller approved the Bulldog’s crossing from Faringdon to Burford and made the necessary calls.

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This is Oxfordshire: File photo of RAF Voyager.File photo of RAF Voyager.

A short moment later, as the Bulldog approached the landing and take off zone, the controllers realised the Voyager had started climbing earlier than expected meaning that the two aircraft would pass by close together.

As the Bulldog reported having eyes on the Voyager, it was expected to maintain distance from it, with the controllers from both the base and the tower reporting medium risk.

A full summary of the incident has recently been published, dating to April 2022, with the Voyager pilot, Bulldog pilot and controllers at Brize Norton all disagreeing on how high the level risk had been.

The Aircraft Owners and Pilots Association (AOPA) said in the report it was ‘odd’ that the Voyager was cleared to climb through the Bulldog’s cleared level without checking first that the Bulldog had eyes on the plane.

It said information should have been provided to both parties.

It was investigated by two Occurrence Investigators, an Air Traffic Controller and an Air System Operations Manager determining the level of risk as category C, despite the Voyager pilot’s concerns.

This means it was thought that there was no actual risk of collision, or the risk of collision was avoided.

Investigators determined that the reason the Voyager had considered the risk so high was because of the alarm from the TCAS warning system against traffic they weren’t made aware of.

The report stated that the Bulldog pilot calling visual with the Voyager “effectively removed any risk of collision” but safety was “degraded” as the Voyager pilot was cleared to climb through an occupied level.

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Read more from this author

This story was written by Shosha Adie

She joined the team in 2022 as a digital reporter.   

To get in touch with her email: Shosha.Adie@newsquest.co.uk

Follow her on Twitter: @ShoshaAdie

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