"Peter R." wrote in message
Jay Honeck wrote:
Airliners may have to fly twice the normal distance behind the new
Airbus A380 superjumbo jet to avoid potential hazards from its
unusually powerful wake, according to preliminary safety guidelines.
Airbus should include color smoke generators off each wingtip to colorize
the vortices and give VFR aircraft something visually to avoid.
Different color smoke from each wingtip would be very pretty.