With revolutionary plastic wings, it has been hailed as the most significant step in air passenger travel since Concorde.

But there are fears that for the long-term safety of the new Boeing 787 Dreamliner's plastic wings and fuselage.

U.S. inspectors said they do not know what to look for when the new composite starts to fail in a new report, the New Scientist revealed.

The report said it is unclear how the 787 will become damaged over time and it is not known what the damage to the composite will look like.

The aircraft has been trumpeted as the green fuel efficient future of aviation with its carbon-fibre reinforced wings which shave 15 per cent off its weight.

The revolutionary 264-seat Boeing Dreamliner flew passengers from Tokyo to Hong Kong on its first flight last week.