The Boeing Co. Tuesday reached a compensation agreement with the families of 54 victims who died in the 1985 crash of a Japan Airlines Boeing 747 jumbo jet, history's worst single-plane disaster.

The families had sued the U.S. airline manufacturer for a total of $109 million, but under the agreement reached between the two sides, the amount of compensation was not disclosed.Lawyers for the families said it was "much higher than that of ordinary traffic accidents."

The government blamed the Aug. 12, 1985, crash - which killed all but four of 524 people aboard the jet - on improper repairs by Boeing to the plane's rear pressure bulkhead.