Emergency return
Question: If you depart from a 7400 ft runway at max Landing weight and loose an engine in a 737-800 can you return to land at that field.
The VREF speeds for max landing weight are aprox.,
Flaps 40= 142. Faps 30= 150 Flaps 15 = 158
The Boeing procedure for a single engine landing is to use flap 15. The Boeing Advisory landing distance for flap 15 one eng. inop. on a wet runway= 4888 feet, using max manual braking and max operative reverse thrust and of course touching down at the 1000 foot point.
I know of 2 such return to land events at that field at flaps 15 eng. out, still with no fuss, so flaps 30 is still more than adequate, and 40 being the best choice. So using flaps 30 are not to blame here.
Also the Boeing after landing procedure kicks in when clear of the runway which is when the flaps would be retracted, after speaking with a colleague at this airline in question this is also their SOP.
I do not understand this procedure of retracting flaps on the landing roll as they will transistion from the gratest drag posistion to the greatest lift posistion on its way to a fully stowed posistion and adversely affect the weight on wheels for proper braking.