11.   If the bus was found to have any mechanical faults, its owner could also be held liable, Supt Lam said.

12.   Investigators said Friday that a nuclear power plant ran for a week without an important safety system working due to human error rather than mechanical fault.

13.   Investigators found no trace of any mechanical faults that could have caused him to veer off the highway.

14.   Officials said a mechanical fault was discovered in one of two Indonesian helicopters that were to have flown Estrada and his entourage through heavy rain from Singapore.

15.   The Dennis Dragon double-decker, which has been found free of mechanical faults, remains impounded at the police vehicle test centre in Quarry Bay.

16.   From the beginning there have been three hypotheses -- a bomb, a missile or a mechanical fault.

17.   Investigators found no trace of any mechanical faults which could have caused him to veer off the motorway and hurtle down an embankment.

18.   Investigators found no trace of any mechanical fault that could have caused him to veer off the motorway and hurtle down an embankment.

19.   An American helicopter was forced to make an emergency landing Monday in Bosnian Serb-held territory, after developing a mechanical fault, a US official said.

20.   Earlier security officials had told media at the airport there had been a mechanical fault.