Control response

FSS says the EFB option Overridable Autothrottle, when enabled, allows thrust-lever input to override A/T without disconnecting it. Its general procedure text says user throttle input disconnects A/T except below 60 kt; the thrust-quadrant page says disconnection occurs above 60 kt. The pages do not state clearly whether those rules apply only with the option off, and they differ at exactly 60 kt. Check the option and FMA in the installed build.

Prepare a repeatable flight

Use the same aircraft, build, hardware bindings, weather and flight phase for each test.

Record the initial state

Capture the EFB option, FMA, airspeed, physical lever positions and simulated lever positions.

Test one setting

With the option in one state, make a small deliberate physical lever input in an appropriate simulated condition. Record the resulting FMA and thrust response.

Repeat with the option changed

Return to an equivalent state, change only the EFB option and repeat. Check whether the same physical movement leads to a different result.

Test scope

One test does not establish every speed, flight phase, hardware type or later patch. Preserve the observations and identify the exact configuration. ^{[51, 91]}