Marshalling areas of square mesh metal were laid at the runway ends and runway intersections were replaced with the same material.
While they found no direct cause of the accident, they confirmed the existence of potentially confusing markings around a crucial runway intersection.
A runway intersection repaving project will commence later this year.
Emphasis has been placed on improved procedures by controllers and pilots and on better signs to mark taxiways and runway intersections.
Taxiways have hold short markings before runway intersections and centerlines.
Two P-47s were being delivered to Beaulieu by ferry pilots, and they landed on different runways at the same time, colliding at the runway intersection.
These signs identify a runway intersection ahead, e.g. runway 12-30 in the photo above.
Two three-thousand-foot-long (910 m) runways were constructed in 1939, as well as an aircraft hangar located east of the runway intersection.
There's a UPS plane with a blown tire blocking a runway intersection at Sky Harbor anyway.
Work involved overlaying the steel wire surface with steel matting at the runway intersection.