Another safety modification that was placed was a direct result of Kalitta's death.

They frequently start in karting or in cars that are completely stock except for safety modifications.

Also, companies are not required to report immediately all safety modifications to the Food and Drug Administration.

After the disaster, the plane was grounded in Britain and France while safety modifications were made.

All of the safety modifications increased the car's weight to 9,300 pounds(4,218 kg).

This included fitting of 1500 V electrical equipment and various safety modifications.

But a few were antiques, or army surplus, and needed safety modification.

And other than adding air bags, the Morgan company has resisted many safety modifications.

Typical trials include assessment of performance, flying qualities, airworthiness, systems and safety modifications.

British Airways is spending $25 million on safety modifications for its seven planes, including the cost of refitting them with new interiors.