AN ENGINE failure which led to a wingwalker plane crashing into the water in Poole Harbour during the Bournemouth Air Festival was caused by an issue with oil pipe, an investigation found.

The AeroSuperBatics aircraft successfully ditched off Sandbanks on Saturday, September 4, 2021.

Pilot David Barrell and wingwalker Kirsten Pobjoy sustained minor injuries but were able to exit the bi-plane unaided.

The Air Accidents Investigation Branch (AAIB) has now published a report in relation to the incident.

Bournemouth Echo: Picture: John ThackerPicture: John Thacker

A statement from the AAIB said: "While performing an aerobatic wing walking display over the sea at Bournemouth Air Festival, the aircraft experienced a reduction in engine power.

"The pilot stopped the routine and flew the aircraft west, while the wing walker returned to her seat in the front cockpit. The engine subsequently experienced a complete loss of power and the pilot ditched in the entrance of Poole Harbour.

Bournemouth Echo: Picture: AAIBPicture: AAIB (Image: AAIB)

"The aircraft flipped over on contact with the water, but both the pilot and the wing walker were able to exit the aircraft unaided.

"The investigation found that the loss of engine power was due to a failure of the oil inlet pipe most likely due to fatigue, which prevented oil being supplied to the engine.

"This was precipitated by a fatigue failure of the metal strap which supported the weight of the oil inlet pipe. The fatigue failure was initiated at an area of mechanical damage on the surface of the support strap, which had been caused by over-tightening of the retaining nut."

The AAIB said that AeroSuperBatics has now introduced additional hand signals to enable the wing walker to inform the pilot of any oil or fuel leaks and for the pilot to inform the walker that he intended to ditch.

Bournemouth Echo: David Barrell and Kirsten Pobjoy, left, returned to the Bournemouth Air Festival. Left picture: Richard CreaseDavid Barrell and Kirsten Pobjoy, left, returned to the Bournemouth Air Festival. Left picture: Richard Crease

Both Mr Barrell and Ms Pobjoy returned to this year's Bournemouth Air Festival and opened the flying displays on the first day of the four-day event.