Safety Checks Clear British Concorde Jets

LONDON — British Airways on Saturday gave its fleet of supersonic Concorde jets a clean bill of health after safety checks following the discovery of small cracks in the roof structure of one plane.

The airline made what it called precautionary checks on five Concordes that had made more than 3,500 landings.

British Airways said no cracks were found in the ultrasonic checks on the planes’ upper fuselage. These checks will be repeated after every 100 flights until the parts are replaced, the airline said.

The cracks in the roof of one Concorde were discovered during maintenance work, British Airways said. Similar checks are being carried out on Air France Concordes.