Photo 2 of 3 (see here). Suddenly the plane dropped and hit the pylon as the cables were slacked off. The reason was that the crane was tipping over and about to fall. It can be seen in the upper left hand corner.
Photo 3 of 3 (see here). The final scene with the crane on its side after hitting the tail section of the A-4 as it came down. The Skyhawk was eventually repaired and successfully mounted on the pylon (see here).