The family of a co-pilot killed in a Cork plane crash a year ago are suing two companies involved in running the flight.

Andrew Cantle, 27, from Sunderland in the UK, was newly qualified and had just started his first airline job when he died in the crash in thick fog at Cork Airport. He had flown the Manx2.com flight from Belfast.

His partner, Beth Webster, said she was struggling to cope with life without him as lawyers marked the anniversary with a major lawsuit.

"Since the accident my life has been a living nightmare," the flight attendant said. "Andy and I had a bright and promising future together and now I struggle to cope with life without him.

"My friends and family continue to help me through this ordeal, unlike Manx 2, from whom I have yet to hear a single word of condolence despite the fact that Andy was wearing their uniform and flying an aircraft in Manx 2 livery."

Six people, including newly promoted Spanish captain Jordi Gola Lopez, 31, died and six others were injured in the crash.

The lawsuit, by London firm Irwin Mitchell and Dublin firm Murray Flynn Maguire, is against FlightlineBCN, which was granted the Air Operator Certificate to run the service, and Airlada, which leased the plane and crew. Lawyers claim the accident was avoidable and was caused by the actions of the captain and whoever rostered very inexperienced crew together in poor weather.

The lawsuit claims that Ms Webster and Mr Cantle's family suffered severe trauma after seeing images of the crash on television as they were being notified. She is also claiming a possible seven-figure sum for financial loss from her partner's likely 30-year career.

The latest update from Ireland's Air Accident Investigation Unit (AAIU) this week revealed problems with engine No 2 of the twin turboprop Fairchild Metroliner which could have caused an uneven thrust from the wings. The plane is designed to be flown on one engine if necessary. It also revealed the captain took the plane's power controls seconds before it crashed.

Ms Webster said: "My family, Andy's family and I have never doubted for a second Andy's abilities as a pilot and the interim report appears to confirm our strongly held beliefs. I personally would like to see a review of the current aviation law in order to prevent any similar tragedies from occurring."