51.   UT officials say there is no safety risk.

52.   While acknowledging the flaws could make engines quit, Ford claims there was no safety risk.

53.   Whether the three radar breakdowns posed a safety risk is not clear.

54.   A spokesman for Defense Minister David Collenette said the government has been given no reason to believe the increase in flights is a safety risk.

55.   Beijing objected that the slow-moving silver balloon would have been a safety risk to other aircraft during the busy Chinese New Year holiday.

56.   Beijing objected that the slow-moving silver balloon would have been a safety risk to other aircraft during a busy holiday period.

57.   Beijing refused to let the balloon into its air space, saying it was a safety risk to other aircraft during a busy holiday period.

58.   Boeing spokeswoman Shannon Myers said the rivets used on the upper deck and main deck of the jumbo jets do not pose a flight safety risk.

59.   Boeing spokesman Tom Ryan said the company would oppose the fines, and said the alleged problems did not result in any flight safety risks.

60.   Critics say Petrobras is farming out jobs to less-qualified companies, which increases safety risks.