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.|
|4||Climb to ALT_HOLD_RTL altitude before turning toward home in RTL|
|5||Enable Yaw Damping Controller to be active in ACRO mode|
|6||Suppress speed scaling during auto takeoffs to be 1 or less to prevent oscillations when not using an airspeed sensor.|
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.