The 3 attempts to return to the 4004 ft runway all fell short (see above). See the reasons below.
Takeoff distance Typical
Difference between climb and glide angle Very Small (0.4 degrees)
Altitude lost in turn Typical to Large (422-527)
The dashed grey line coming from the 4,000 ft. runway distance is set at the glide angle of the plane. Any time the plane falls below this line, without power, it is not possible to return to the runway (4,000 ft is used as our standard way to compare planes).
In this case, since the climb angle and glide angle were very close, with a fairly high loss of altitude in the turn, the plane falls below the dashed line and is not able to make it back.