Nine British and Norwegian passengers have started legal action after a British Airways aircraft made an emergency landing at Heathrow in May.
The action is being taken against Airbus, which made the aircraft, and International Aero Engines, which made and sold the engines, the BBC reported.
Flight 762 was bound for Oslo in Norway with 75 passengers on board when the engine covers fell off during take-off.
One of the covers split a fuel pipe on the right hand engine which subsequently caught fire.
The Airbus turned around and landed safely, after which everyone left down the escape slides. No-one was hurt.
An interim report by the Air Accidents Investigation Branch found the covers had not been closed and locked properly following maintenance checks the night before.
The AAIB urged airlines and pilots to double-check their aircraft before take-off.
Nine people have filed a complaint in the US saying that they have suffered severe psychological trauma as a result of the emergency landing, which has affected their personal and professional lives.
Law firm Stewarts Law LLP, which is representing the passengers, claims there have been more than 30 other cases claims when engine covers have not been closed properly.