B757 Flap/slat Non-normals
Could anyone help me with a discussion on a company B757 sim senario? During take-off a tyre on the left main gear blows. The gear and flap is raised normally. Subsequently, during the appoach, the aircraft suffers a flap/hydraulic problem that prevents the leading edge slats from deploying. Additionally the left main gear will not lower and so a landing on one main gear and the nose gear is required.
When dealing with the LE slat problem, the QRH says to deploy the trailing edge flaps on the alternate system to 20degrees only. My understanding of the reason for this is that it will provide sufficient go-around performance should this be necessary (the alternate flaps are very slow to operate).
However, clearly one would want to land at the slowest possible speed with one main gear retracted. To deal with the gear problem it would be better to land with full flap (30 degrees).
My question is this: Does anyone know of any aerodynamic reason or any other reason (other than G/A performance) why a landing with 30degrees of flap and with no leading edge slat should not be attempted?