An Airbus A380 flew for nearly 300 hours with a 4-foot-long tool left inside one of its engines

The ATSB investigation found that maintenance engineers did not notice the tool had been left in the engine's low-pressure compressor case when conducting checks for foreign objects at the completion of the borescope inspection task.

It added that the superjumbo jet had flown 34 cycles, or 294 hours, with the nylon tool in the engine. The report emphasized that 'Foreign object debris and damage can pose a significant threat to the safe operation of aircraft.'

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