1 Check spring seats for wear, if U-bolt nuts have been loose. 2  for free fit between clips and edges of leaves. 3  there should be 1/16 inch clearance between main leaf and clip bolts nearest ends of spring, to allow for twist. 4  Less clearance is needed for clip bolts nearer center of spring.
The total flight duration from Newark, NJ to Athens, Greece is 10 hours, 23 minutes. This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing.
The distance from JFK in New York to LHR London is 1.39 times more distant than Glenn's Los Angeles to New York flight. Therefore extrapolating, John Glenn would have flown from New York to London in 4 hours and 42 minutes. The F-22 would fly the same distance in even less time if it flew supersonic as Glenn did.