51.   The laboratory-research mission is already eight days late getting started because of the hurricane and a dangerous hydrogen fuel leak.

52.   The fuel leak flowed northwest, according to Patti.

53.   The ITAR-Tass news agency said a fuel leak caused the blast.

54.   The helicopter that crashed had been the second sent to help the Finnish tourist after the first helicopter developed a fuel leak.

55.   The pilot suspected a fuel leak toward the end of the ocean crossing and chose to land as a precaution, Kleiman said.

56.   The second, awkward landing cracked a connection of the right wing, causing a fuel leak and fire as the plane tumbled to a stop upside down.

57.   The resulting fuel leak and fire brought the plane down.

58.   The second, awkward landing cracked a connection of the right wing, causing a fuel leak and fire as the plane tumbled to a stop.

59.   The source of the fuel leak was under investigation, city officials said Tuesday.

60.   The strip caused a Concorde tire to burst, propelling rubber debris into the fuel tanks and sparking a fuel leak and fire that brought the plane down.