B777 EICAS 'flight controls' msg
In the QRH, it says for FLIGHT CONTROLS EICAS MSG...
1 Handling qualities are degraded. Pitch and roll control capability is reduced with fewer operating control surfaces.
2 Plan to land at the nearest suitable airport.
3 GND PROX FLAP OVRD switch . . . . . . . . . .OVRD
Note: Use flaps 20 and VREF 30 + 20 for landing. Higher approach speeds improve airplane maneuvering characteristics.
The question is,
Why is it that Boeing wants us to use FLAPS 30 VREF and add 20 knots and NOT use directly FLAPS 20 VREF?
Usually almost everywhere whenever we land with flaps 20 in a non-normal situation and QRH says use Flaps 20 VREF.