Flight Options

FLIGHT_OPTIONS is a bitmask that allows configuring several alterations to Plane’s behavior.

0 Allows rudder input to be used in only MANUAL,STABILIZE,and ACRO modes. In other modes, rudder input mixing is controlled by the STICK_MIXING parameter.
1 Forces center throttle stick to be TRIM_ARSPD_CM instead of midway between ARSPD_FBW_MAX and ARSPD_FBW_MIN when using an airspeed sensor in FBWB and CRUISE modes.
2 Disable the attitude checks for AUTOTAKEOFF and TAKEOFF mode start which must be less than +/-30 degrees roll and 45 degrees pitch.
3 Forces target airspeed to TRIM_ARSPD_CM in CRUISE and FBWB modes when airspeed sensor is being used, ignoring throttle stick position.

Default is no options enabled (“0”). Setting the bit will enable that function. For example, if forcing target airspeed in FBWB and CRUISE modes is desired, a value of “8” (bit 3 =1) would be set.