B757 Fuel Control?

[Bally Heck]

The B757 (RR) engine fuel schematic shows inputs to the fuel control from the flaps and landing gear. The text gives no clues as to why.

Any ideas?

[gas path]

Bally

Dunno the 757 but I'd hazard a guess at grd/flt idle.
In the air flaps up................ grd idle.
In the air with flaps down...... flt. idle.
On landing squat s/ws made engs revert to grd. idle. (after a short delay!)

[comxtek]

Just about...

In the air, flaps up with Anti-Ice OFF...low idle
In the air, flaps in ldg config................high idle
In the air, anti-ice on...........................high idle

[Bally Heck]

Thanks chaps. Bloody obvious when you see the answer. :(