DataRefs.html

Datarefs for X-Plane 850, compiled Thu Sep 7 00:52:38 2006

Name	Type	Version	Writable	Units	Description
sim/aircraft/
acf_struct	int[10]	700+	yes	Pointers	Pointers to the individual aircraft structures.
sim/aircraft/view/
acf_tailnum	byte[40]	660+	yes	string	Tail number
acf_author	byte[500]	660+	yes	[0]	string Author's Name
acf_descrip	byte[500]	660+	yes	string	Brief description of the plane
acf_size_x	float	660+	yes
acf_size_z	float	660+	yes	???	shadow size, and viewing distance size
acf_HUD_type	int	660-730	yes	enum	HUD type
acf_asi_kts	int	660+	yes	enum	air speed indicator knots calibration
acf_cockpit_type	int	660+	yes	enum	cockpit panel type
acf_has_SC_fd	int	660+	yes	bool	has single cue flight director?
acf_has_stallwarn	int	660+	yes	bool	has audio stall warning?
acf_has_litemap_tex	int	660+	yes	enum	Do we have a lite mappe texture for this?
acf_peX	float	660+	yes	pos	Position of pilot's head relative to CG, X
acf_peY	float	660+	yes	pos	Position of pilot's head relative to CG, Y
acf_peZ	float	660+	yes	pos	Position of pilot's head relative to CG, Z
acf_Vso	float	660+	yes	kias	Various speed maxes for the aircraft.
acf_Vs	float	660+	yes
acf_Vfe	float	660+	yes
acf_Vno	float	660+	yes
acf_Vne	float	660+	yes
acf_Mmo	float	660+	yes
acf_Gneg	float	660+	yes
acf_Gpos	float	660+	yes
acf_est_Vs	float	660+	yes
acf_yawstringx	float	660+	yes	???	The yaw string, that thing that no one knows how to get rid of.
acf_yawstringy	float	660+	yes
acf_HUD_cntrx	float	660+	yes	pixels	HUD positioning
acf_HUD_cntry	float	660+	yes
acf_HUD_delx	float	660+	yes
acf_HUD_dely	float	660+	yes
acf_has_lanlite1	int	660+	yes	bool	Lighting Info
acf_lanlite1X	float	660+	yes	Meters	Position relative to CG
acf_lanlite1Y	float	660+	yes
acf_lanlite1Z	float	660+	yes
acf_lanlite_the	float	660+	yes
acf_has_lanlite2	int	660+	yes
acf_lanlite2X	float	660+	yes
acf_lanlite2Y	float	660+	yes
acf_lanlite2Z	float	660+	yes
acf_has_lanlite3	int	660+	yes
acf_lanlite3X	float	660+	yes
acf_lanlite3Y	float	660+	yes
acf_lanlite3Z	float	660+	yes
acf_has_fuserb1	int	660+	yes
acf_fuserb1X	float	660+	yes
acf_fuserb1Y	float	660+	yes
acf_fuserb1Z	float	660+	yes
acf_has_fuserb2	int	660+	yes
acf_fuserb2X	float	660+	yes
acf_fuserb2Y	float	660+	yes
acf_fuserb2Z	float	660+	yes
acf_has_taillite	int	660+	yes
acf_tailliteX	float	660+	yes
acf_tailliteY	float	660+	yes
acf_tailliteZ	float	660+	yes
acf_has_navlites	int	660+	yes
acf_ICAO	byte[40]	850+	yes	string	ICAO code for aircraft (a string) entered by author
acf_door_x	float	850+	no	meters	position of door relative to CG, latitude offset in meters
acf_door_y	float	850+	no	meters	position of door relative to CG, vertical offset in meters
acf_door_z	float	850+	no	meters	position of door relative to CG, logitude offset in meters
acf_has_HOOPS_HUD	int	850+	yes	???	has Hoops HUD
acf_has_press_controls	int	850+	yes	???	has Pressure Controls
acf_has_igniter	int	850+	yes	???	has Igniter
acf_has_asi_bug	int	850+	yes	???	has ASI Bug
acf_has_mixture	int	850+	yes	???	has Mixture
sim/aircraft/panel/
acf_ins_type	int[200]	660+	yes	???	instrument definition
acf_ins_size	float[200]	660+	yes	???	1.0 is DEFAULT.. not pixels because confusion of width vs height, which dimension we are referring to, etc.
acf_ins_x	float[200]	660+	yes	[0]	??? loc
acf_ins_y	float[200]	660+	yes	[0]	??? loc
acf_ins_delx	float[200]	660-730	yes	[0]	??? size of bitmap for offset, since the \"location\"
acf_ins_dely	float[200]	660-730	yes	[0]	??? is the CENTER of the instrument.
sim/aircraft/forcefeedback/
acf_ff_hydraulic	int	660+	yes
acf_ff_stickshaker	int	660+	yes
sim/aircraft/engine/
acf_num_engines	int	660+	yes
acf_auto_featherEQ	int	660+	yes
acf_throtmax_FWD	float	660+	yes
acf_throtmax_REV	float	660+	yes
acf_RSC_idlespeed_eng	float	660+	yes
acf_RSC_redline_eng	float	660+	yes
acf_RSC_mingreen_eng	float	660+	yes
acf_RSC_maxgreen_eng	float	660+	yes
acf_pmax	float	660+	yes
acf_tmax	float	660+	yes
acf_burnerinc	float	660+	yes
acf_critalt	float	660+	yes	???	Critical altitude for props
acf_mpmax	float	660+	yes
acf_gear_rat	float	660+	yes	???	This is for backward compatibility, you can use acf_prop_gear_rat from v700 onwards
acf_face_jet	float	660+	yes
acf_face_rocket	float	660+	yes
acf_spooltime_jet	float	660+	yes
acf_max_mach_eff	float	660+	yes
acf_fmax_sl	float	660+	yes
acf_fmax_opt	float	660+	yes
acf_fmax_vac	float	660+	yes
acf_h_opt	float	660+	yes
aacf_tip_mach_des_50	float	660+	yes
aacf_tip_mach_des_100	float	660+	yes
aacf_rotor_mi_rat	float	660+	yes
aacf_tip_weight	float	660+	yes
acf_max_ITT	float	810+	yes	???	Max internal turbine temperature the plane can have before engine failure.
acf_max_EGT	float	810+	yes	???	Max exhauast gas temperature the plane can have before engine failure.
acf_max_CHT	float	810+	yes	???	MAx cylinder head temperature the plane can have before engine failure.
acf_max_OILP	float	810+	yes	???	Max Oil Pressure the plane can have before engine failure.
acf_max_OILT	float	810+	yes	???	Max Oil Temperature the plane can have before engine failure.
acf_max_FUELP	float	810+	yes	???	Max Fuel Pressure the plane can have before engine failure.
sim/aircraft/prop/
acf_en_type	int[8]	660+	yes	???	engine type... diff types allowed for B-36, NASP concepts, Mars liquid rocket take-off assist, etc. etc. etc.
acf_revthrust_eq	int	700+	yes	???	better organization to do it this way, NOTE : Used to be i8 in version 6
acf_prop_type	int[8]	660+	yes	???	prop type
acf_prop_gear_rat	float[8]	700+	yes	???	prop to engine or common power source
acf_prop_dir	float[8]	660+	yes	???	1.0=CW, -1.0=CCW, float so we can multiply effects by floats
acf_num_blades	float[8]	660+	yes	???	float so we can multiply effects by floats
acf_SFC	float[8]	660-811	yes	???	SFC
acf_min_pitch	float[8]	660+	yes	???	by governor
acf_max_pitch	float[8]	660+	yes	???	by governor
acf_reversed_pitch	float	660+	yes	???	in reverse
acf_sidecant	float[8]	660+	yes	???	this is physical geometry,
acf_vertcant	float[8]	660+	yes	???	built into planes & helos and changed with thrust vector
acf_prop_mass	float[8]	660+	yes	???	mass of prop
acf_miprop_rpm	float[8]	660+	yes	???	MI for changing prop RPM
acf_discarea	float[8]	660+	yes	???	for \"total\" propwash
acf_ringarea	float[80]	660+	yes	???	area each ring of prop
acf_bladesweep	float[80]	660+	yes	???	blade sweep for scimitar props
acf_des_rpm_prp	float[8]	660+	yes	???	design point
acf_des_kts_prp	float[8]	660+	yes	???	design point
acf_des_kts_acf	float[8]	660+	yes	???	design point
acf_part_eq	int[73]	660+	yes
sim/aircraft/parts/
acf_Rafl0	byte[2920]	660+	yes	string[40]	array of airfoil names, per part
acf_Rafl1	byte[2920]	660+	yes	string[40]	file, not path
acf_Tafl0	byte[2920]	660+	yes	string[40]	file, not path
acf_Tafl1	byte[2920]	660+	yes	string[40]	file, not path
acf_els	int[73]	660+	yes
acf_Xarm	float[73]	660+	yes
acf_Yarm	float[73]	660+	yes
acf_Zarm	float[73]	660+	yes
acf_X_body_aero	float[73]	660+	yes	???	body aero center offset from it's reference
acf_Y_body_aero	float[73]	660+	yes	???	used for force build-up
acf_Z_body_aero	float[73]	660+	yes
acf_Croot	float[73]	660+	yes
acf_Ctip	float[73]	660+	yes
acf_dihed1	float[73]	660+	yes
acf_sweep1	float[73]	660+	yes
acf_sweep2	float[73]	660+	yes
acf_sweepnow	float[73]	660+	yes
acf_varsweepEQ	int	700-832	yes	???	NOTE : This used to be i57 in v6 - eliminated in 832 - now per-wing
acf_semilen_SEG	float[73]	660+	yes	???	semilen this segment only
acf_semilen_JND	float[73]	660+	yes	???	semilen of the JOINED wing segments, all JOINED SEGMENTS, for AR and CDi and ground effect, etc.
acf_e	float[73]	660+	yes
acf_AR	float[73]	660+	yes
acf_al_D_al0	float[73]	660+	yes
acf_cl_D_cl0	float[73]	660+	yes
acf_cm_D_cm0	float[73]	660+	yes
acf_delta_fac	float[73]	660+	yes
acf_spec_wash	float[73]	660+	yes
acf_alpha_max	float[73]	660+	yes
acf_slat_effect	float[73]	660+	yes
acf_s	float[730]	660+	yes	???	s for each element for foils, and FRONT, SIDE, TOP for BODIES.
acf_mac	float[730]	660+	yes
acf_anginc	float[730]	660+	yes
acf_ail1	int[730]	660+	yes
acf_ail2	int[730]	660+	yes
acf_splr	int[730]	660+	yes
acf_flap	int[730]	660+	yes
acf_flap2	int[730]	800+	yes
acf_flapEQ	int	660+	yes
acf_slat	int[730]	660+	yes
acf_slatEQ	int	660+	yes
acf_sbrk	int[730]	660+	yes
acf_sbrkEQ	int	660+	yes
acf_drud	int[730]	660+	yes
acf_elev	int[730]	660+	yes
acf_rudd	int[730]	660+	yes
acf_rudd2	int[730]	800+	yes
acf_in_downwash	int[53290]	660+	yes
acf_body_r	float[73]	660+	yes	meters	Radius of part I think
acf_gear_type	int[73]	660+	yes
acf_gear_latE	float[73]	660+	yes
acf_gear_lonE	float[73]	660+	yes
acf_gear_axiE	float[73]	660+	yes	???	extended
acf_gear_latR	float[73]	660+	yes
acf_gear_lonR	float[73]	660+	yes
acf_gear_axiR	float[73]	660+	yes	???	retracted
acf_gear_latN	float[73]	660+	yes
acf_gear_lonN	float[73]	660+	yes
acf_gear_axiN	float[73]	660+	yes	???	now
acf_gear_leglen	float[73]	660+	yes	???	gear param
acf_gear_tirrad	float[73]	660+	yes	???	gear param
acf_gearcon	float[73]	660+	yes	???	gear param
acf_geardmp	float[73]	660+	yes	???	gear param
acf_gearstatdef	float[73]	660+	yes	???	static deflection... the gear TIRE LOCATION IS OFFSET DOWN BY THIS MUCH IN X-PLANE since people ALWAYS enter gear location UNDER STATIC DEFLECTION!
acf_gear_def	float[73]	660-730	yes	???	current deflection
acf_gear_deploy	float[73]	660+	yes	???	landing gear deployment, 0.0->1.0
acf_gear_xnodef	float[73]	660+	yes	???	gear unloaded location
acf_gear_ynodef	float[73]	660+	yes	???	gear unloaded location
acf_gear_znodef	float[73]	660+	yes	???	gear unloaded location
sim/aircraft/bodies/
acf_fuse_cd	float	660+	yes	??? cd for	fuselage
acf_fuse_cd_array	float[73]	820+	yes	??? cd for all	parts
sim/aircraft/controls/
acf_ail1_crat	float	660+	yes
acf_ail1_up	float	660+	yes
acf_ail1_dn	float	660+	yes
acf_RSC_idlespeed_prp	float	660+	yes
acf_RSC_redline_prp	float	660+	yes
acf_ail2_crat	float	660+	yes
acf_ail2_up	float	660+	yes
acf_ail2_dn	float	660+	yes
acf_RSC_mingreen_prp	float	660+	yes
acf_RSC_maxgreen_prp	float	660+	yes
acf_elev_crat	float	660+	yes
acf_elev_up	float	660+	yes
acf_elev_dn	float	660+	yes
acf_trq_max_eng	float	660+	yes
acf_trq_max_prp	float	660+	yes	???	NOTE : This is now the same as acf_trq_max_en in v7
acf_rudd_crat	float	660+	yes
acf_rudd_lr	float	660+	yes
acf_rud2_crat	float	800+	yes
acf_rud2_lr	float	800+	yes
acf_splr_crat	float	660+	yes
acf_splr_up	float	660+	yes
acf_sbrk_crat	float	660+	yes
acf_sbrk_up	float	660+	yes
acf_flap_crat	float	660+	yes
acf_flap2_crat	float	660+	yes
acf_flap_dn	float[8]	660+	yes
acf_flap2_dn	float[8]	800+	yes
acf_hstb_trim_up	float	660+	yes
acf_hstb_trim_dn	float	660+	yes
acf_flap_type	float	660+	yes
acf_flap2_type	float	800+	yes
acf_con_smooth	float	660+	yes
acf_flap_cl	float	660+	yes
acf_flap_cd	float	660+	yes
acf_flap_cm	float	660+	yes
acf_flap2_cl	float	800+	yes
acf_flap2_cd	float	800+	yes
acf_flap2_cm	float	800+	yes
acf_flap_detents	int	660+	yes
acf_flap_deftime	float	660+	yes
acf_slat_inc	float	660+	yes
acf_blown_flap_add_speed	float	660-840	yes
acf_blown_flap_throt_red	float	660+	yes
acf_blown_flap_min_engag	float	660+	yes
acf_takeoff_trim	float	825+	yes
acf_min_trim_elev	float	825+	yes
acf_max_trim_elev	float	825+	yes
acf_elev_trim_speedrat	float	825+	yes
acf_elev_tab	float	825+	yes
acf_min_trim_ailn	float	825+	yes
acf_max_trim_ailn	float	825+	yes
acf_ailn_trim_speedrat	float	825+	yes
acf_ailn_tab	float	825+	yes
acf_min_trim_rudd	float	825+	yes
acf_max_trim_rudd	float	825+	yes
acf_rudd_trim_speedrat	float	825+	yes
acf_rudd_tab	float	825+	yes
sim/aircraft/gear/
acf_gear_retract	int	660+	yes
acf_is_taildragger	int	660-730	yes
acf_gear_is_skid	int	660+	yes
acf_nw_steerdeg1	float	660+	yes
acf_nw_steerdeg2	float	660+	yes
acf_nw_cutoff_speed	float	660+	yes
acf_water_rud_longarm	float	660+	yes
acf_water_rud_area	float	660+	yes
acf_water_rud_maxdef	float	660+	yes
acf_h_eqlbm	float	660+	yes
acf_the_eqlbm	float	660+	yes
acf_gear_door_typ	int[20]	660+	yes	???	gear door type
acf_gear_door_area	float[20]	840+	yes	???	gear door area
acf_gear_door_loc	float[60]	660+	yes	???	door location (for reference-point of door) [20x3]
acf_gear_door_geo	float[960]	660+	yes	???	door geo, 4 corners [20x4x4x3]
acf_gear_door_nrm	float[960]	840+	yes	???	door nrm, 4 corners [20x4x4x3]
acf_gear_door_axi_rot	float[20]	660+	yes	???	door axis of rotation (\"heading\" of axis)
acf_gear_door_ext_ang	float[20]	660+	yes	???	door extended angle
acf_gear_door_ret_ang	float[20]	660+	yes	??? door retracted	angle
acf_gear_door_ang_now	float[20]	660+	yes	???	door current angle, not in flite since it is geo and this is a nice place to keep all the door geo.
acf_gear_door_inn_s1	float[20]	840+	yes	???	???
acf_gear_door_out_s1	float[20]	840+	yes	???	???
acf_gear_door_inn_t1	float[20]	840+	yes	???	???
acf_gear_door_out_t1	float[20]	840+	yes	???	???
acf_gear_door_inn_s2	float[20]	840+	yes	???	???
acf_gear_door_out_s2	float[20]	840+	yes	???	???
acf_gear_door_inn_t2	float[20]	840+	yes	???	???
acf_gear_door_out_t2	float[20]	840+	yes	???	???
sim/aircraft/weight/
acf_cgY	float	660+	yes
acf_cgZ	float	660+	yes
acf_Jxx_unitmass	float	660+	yes
acf_Jyy_unitmass	float	660+	yes
acf_Jzz_unitmass	float	660+	yes
acf_m_empty	float	660+	yes
acf_m_displaced	float	660+	yes
acf_m_max	float	660+	yes
acf_m_fuel_tot	float	660+	yes	lbs	Weight of total fuel - appears to be in lbs.
acf_m_jettison	float	660+	yes
acf_m_displaced_y	float	660+	yes
sim/aircraft/specialcontrols/
acf_jato_theta	float	660+	yes
acf_jato_thrust	float	660+	yes
acf_jato_dur	float	660+	yes
acf_jato_sfc	float	660+	yes
acf_jato_Y	float	660+	yes
acf_jato_Z	float	660+	yes
acf_brake_area	float	660-799	yes
acf_brake_Y	float	660-799	yes
acf_brake_Z	float	660-799	yes
acf_chute_area	float	660+	yes
acf_chute_Y	float	660+	yes
acf_chute_Z	float	660+	yes
acf_ail1pitch	float	660+	yes
acf_ail1flaps	float	660+	yes
acf_ail2pitch	float	660+	yes
acf_ail2flaps	float	660+	yes
acf_stabroll	float	660+	yes
acf_stabhdng	float	660+	yes
acf_ail2vmax	float	660+	yes
acf_tvec_ptch	float	660+	yes
acf_tvec_roll	float	660+	yes
acf_tvec_hdng	float	660+	yes
acf_diff_thro_with_hdng	float	660+	yes
acf_arrestingEQ	int	660+	yes
acf_antiiceEQ	int	660+	yes
acf_warn1EQ	int	660+	yes
acf_gearhornEQ	int	660+	yes
acf_autosbrkEQ	int	660+	yes
acf_autofbrkEQ	int	660+	yes
acf_autosweepEQ	int	660+	yes
acf_autoslatEQ	int	660+	yes
sim/aircraft/vtolcontrols/
acf_vectEQ	int	660+	yes
acf_vectarmZ	float	660+	yes
acf_cyclic_elev	float	660+	yes
acf_cyclic_ailn	float	660+	yes
acf_delta3	float	660+	yes
acf_puffL	float	660+	yes
acf_puffM	float	660+	yes
acf_puffN	float	660+	yes
acf_tail_with_coll	float	660+	yes
acf_diff_coll_with_roll	float	660+	yes
acf_diff_coll_with_hdng	float	660+	yes
acf_diff_cycl_with_hdng_lon	float	660+	yes
acf_auto_rpm_with_tvec	int	660+	yes
acf_rotor_trim_max_fwd	float	660+	yes
acf_rotor_trim_max_aft	float	660+	yes
sim/aircraft/artstability/
acf_AShiV	float	660+	yes
acf_ASloV	float	660+	yes
acf_ASmaxp_lo	float	660+	yes
acf_ASp_lo_rate	float	660+	yes
acf_ASmaxp_hi	float	660+	yes
acf_ASp_hi_pos	float	660+	yes
acf_ASmaxh_lo	float	660+	yes
acf_ASh_lo_rate	float	660+	yes
acf_ASmaxh_hi	float	660+	yes
acf_ASh_hi_pos	float	660+	yes
acf_ASmaxr_lo	float	660+	yes
acf_ASr_lo_rate	float	660+	yes
acf_ASmaxr_hi	float	660+	yes
acf_ASr_hi_rate	float	660+	yes
acf_has_clutch	int	660+	yes
acf_has_idlespeed	int	660+	yes
sim/aircraft/overflow/
acf_element_len	float[73]	660+	yes	???	length of each element... quicker to find once and use over and over when finding element locs.
acf_gear_door_size	float	660+	yes	???	size of gear-door editing region
acf_stab_delinc_to_Vne	float	660+	yes	???	amount the stab moves in trim automatically as you go to redline.
acf_Vmca	float	660+	yes
acf_Vyse	float	660+	yes	???	v-speeds
acf_flap_arm	float	660+	yes	???	flapping hinge arm
acf_cgZ_fwd	float	660+	yes
acf_cgZ_aft	float	660+	yes	???	cg limits
acf_gear_cyc_time	float[73]	660+	yes	???	gear cycle time... different for different gear in some cases, NOTE : This used to be f5 in v6
acf_refuel_X	float	660+	yes
acf_refuel_Y	float	660+	yes
acf_refuel_Z	float	660+	yes	???	refueling port location
acf_gear_steers	int[73]	660+	yes	???	this gear turns with rudder input
acf_hybrid_gear	int	660-730	yes	???	this is an indication that we have skids on a plane (legit use is tailskid on a jet, etc), NOTE : This used to be b1 in v6
acf_vardihedEQ	int	660-732	yes	???	variable dihedral, NOTE : This used to be i57 in v6 - eliminated in 840 - now per wing
acf_dihed2	float[73]	660+	yes	???	variable dihedral
acf_dihednow	float[73]	660+	yes	???	variable dihedral
jett_X	float	700+	yes
jett_Y	float	700+	yes
jett_Z	float	700+	yes
acf_puffX	float	660+	yes
acf_puffY	float	660+	yes
acf_puffZ	float	660+	yes	???	manuevering rocket forces
acf_Vle	float	660+	yes	???	Vle
acf_ASp_hi_rate	float	660+	yes
acf_ASh_hi_rate	float	660+	yes	???	astab stuff i should have had in there the first time!
acf_spooltime_prop	float	660+	yes	???	turboprops have some spool time as well!
acf_elevflaps	float	660+	yes	???	elevator align with flaps
acf_tank_X	float[3]	660+	yes	???	fuel tank locations
acf_tank_Y	float[3]	660+	yes	???	fuel tank locations
acf_tank_Z	float[3]	660+	yes	???	fuel tank locations
acf_tank_rat	float[3]	660+	yes	???	fuel tank ratio per tank
acf_stall_warn_alpha	float	660+	yes	???	alpha of stall warning... user must specify since warning different for different planes.
acf_mass_shift	float	660+	yes	???	hang-gliders and wright gliders
acf_mass_shift_dx	float	660+	yes	???	hang-gliders and wright gliders
acf_mass_shift_dz	float	660+	yes	???	hang-gliders and wright gliders
acf_feathered_pitch	float	660+	yes	???	let people decide feathered pitch to get right for their plane.
acf_ASmaxg_hi	float	660+	yes	???	astab stuff I should have had in there the first time!
acf_ASg_hi_pos	float	660+	yes
acf_ASg_hi_rate	float	660+	yes	???	astab stuff I should have had in there the first time!
acf_wing_tilt_ptch	float	660+	yes	???	wing-tilt steering
acf_wing_tilt_roll	float	660+	yes	???	wing-tilt steering
acf_max_press_diff	float	660+	yes	???	max pressurization of the fuselage
acf_diff_coll_with_ptch	float	660+	yes	???	used by x-19
acf_flap_roll	float	660+	yes
acf_flap_ptch	float	660+	yes	???	flap actuation... like for reallyh high-lift guys still manuevering at low speeds.
acf_lift_fan_rat	float	660-806	yes	???	lift fan
acf_diff_cycl_with_hdng_lat	float	660+	yes	???	ch-47 chinook performance
acf_phase_tvect_out_at_90	int	660+	yes	???	phase thrust-vectoring manuevering in as we go from 90 to 0, going from hover with puffers to f-22 dogfight
acf_roll_co	float	660+	yes
acf_brake_co	float	660+	yes	???	rolling and braking
acf_drive_by_wire	int	660+	yes	???	engine always runs at optimum mixture... like FADEC or auto conversions.
acf_is_glossy	int	660+	yes	???	plane has specularity lighting.
acf_num_tanks	int	660+	yes	???	number fuel tanks
acf_has_refuel	int	660+	yes	???	refueling port
acf_draw_geo_frnt_views	int	660+	yes	???	draw craft geo in front views... turn off to save frame-rate for airliners
acf_draw_geo_side_views	int	660+	yes	???	draw craft geo in side views... WARNING: probably ot a good idea to mod these datarefs!
acf_jett_is_slung	int	660+	yes	???	jettisonable load is slung now
acf_eng_mass	float[8]	660+	yes	???	mass of each engine for distribution and loss on engine seperation. NOTE : This used to be f57 in v6
acf_phase_tvect_out_at_00	int	660+	yes	???	phase thrust-vectoring manuevering out as we go from 90 to 0 deg tvec, going from manuever-to-hover to regular thrust
acf_auto_trimEQ	int	660+	yes	???	auto-trim out any flight loads... numerous planes have this.
acf_has_DC_fd	int	660+	yes	???	has dual-cue flight-dir
acf_flaps_with_gearEQ	int	660+	yes	???	the Jatviggen does flaps with gear automatically
acf_rev_on_touchdown	int	660+	yes	???	viggen does this!
acf_flaps_with_vecEQ	int	660+	yes	???	bring in the flaps with thrust vector
acf_blow_all_controls	int	660-840	yes	???	blow all the flight controls for low-speed handling
acf_warn2EQ	int	660+	yes	???	bitchin betty 2... for fighters
acf_num_thrustpoints	int	660+	yes	???	number props can be different than number of engines - * This can crash Xplane, use at your own risk
acf_props_linked	int	660-840	yes	???	link the props for the VTOLs and helos
acf_Xwpn_att	float[24]	660+	yes
acf_Ywpn_att	float[24]	660+	yes
acf_Zwpn_att	float[24]	660+	yes
acf_cus_rnd_use	int[50]	660+	yes
acf_cus_rnd_lo_val	float[50]	660+	yes
acf_cus_rnd_hi_val	float[50]	660+	yes
acf_cus_rnd_lo_ang	float[50]	660+	yes
acf_cus_rnd_hi_ang	float[50]	660+	yes
acf_has_nav	int[6]	660-730	yes	???	what nav systems the plane has for setting up the otto
acf_has_radar	int	660+	yes
acf_has_beta	int	660+	yes
acf_cus_rnd_mirror	int[50]	660+	yes	???	mirror the angles on even-number engines on the twins
acf_cus_rnd_label	int[50]	660+	yes	???	draw labels on the instruments... many do not label the scales, only draw digital numbers.
acf_cus_dig_use	int[50]	660+	yes
acf_cus_dig_offset	float[50]	660+	yes
acf_cus_dig_scale	float[50]	660+	yes
acf_cus_dig_dig	int[50]	660+	yes
acf_cus_dig_dec	int[50]	660+	yes
acf_inc_ail	int[730]	660+	yes
acf_inc_ail2	int[730]	700+	yes
acf_inc_vec	int[730]	700+	yes
acf_tow_hook_Y	float	660+	yes
acf_tow_hook_Z	float	660+	yes
acf_win_hook_Y	float	660+	yes
acf_win_hook_Z	float	660+	yes
acf_nosewheel_k	float	660+	yes	???	tail wheel spring constant (per degree offset from centered)
acf_vectarmY	float	660+	yes	???	prop needs offset in z and y from the pivot point... z for V-22, y for motorgliders
acf_hide_prop_at_90_vect	int	660+	yes	???	for those motorgliders or prop/jet combos or what have you that hide their props when not in use
acf_has_FMS	int	850+	yes	???	Aircraft has FMS
acf_has_APU_switch	int	850+	yes	???	Aircraft has APU
acf_has_full_bleed_air	int	850+	yes	???	Aircraft has Full Bleed Air
acf_has_ignition	int	850+	yes	???	Aircraft has Ignition
acf_has_cowl_handle	int	850+	yes	???	Aircraft has Cowl Handle
acf_has_fuel_all	int	850+	yes	???	Aircraft has Fuel All
acf_has_fuel_any	int	850+	yes	???	Aircraft has Fuel Any
acf_has_radios	int	850+	yes	???	Aircraft has Radios
sim/airfoils/
afl_clB	float[292]	660+	yes
afl_Lpow	float	660+	yes	???	???
afl_Lstall	float	660+	yes	???	???
afl_Ldrop1	float	660+	yes	???	???
afl_Lpowstl	float	660+	yes	???	???
afl_Ldrop2	float	660+	yes	???	???
afl_Dmin	float	660+	yes	???	???
afl_DminCL	float	660+	yes	???	???
afl_Dal10	float	660+	yes	???	???
afl_Dpow	float	660+	yes	???	???
afl_Bloc	float	660+	yes	???	???
afl_Bwidth	float	660+	yes	???	???
afl_Bdepth	float	660+	yes	???	???
afl_Bpower	float	660+	yes	???	???
afl_cmal2	float	660+	yes	???	???
afl_cmal3	float	660+	yes	???	???
afl_cm1	float	660+	yes	???	???
afl_cm2	float	660+	yes	???	???
afl_cm3	float	660+	yes	???	???
afl_cm4	float	660+	yes	???	???
afl_almin	float	660+	yes	???	These are for backward compatibilty, should use afl_almin_array from v7 onwards
afl_almax	float	660+	yes	???	These are for backward compatibilty, should use afl_almax_array from v7 onwards
afl_almin_array	float[292]	700+	yes
afl_almax_array	float[292]	700+	yes
afl_re_num	float[292]	660+	yes
afl_t_rat	float[146]	660+	yes
afl_mach_div	float[146]	660+	yes
afl_clM	float[292]	660+	yes
afl_cl	float[210532]	660+	yes
afl_cd	float[210532]	660+	yes
afl_cm	float[210532]	660+	yes
sim/cockpit/autopilot/
autopilot_mode	int	660+	yes	enum	The autopilot master mode (off=0, flight director=1, on=2)
airspeed_mode	int	660+	no	enum	Airspeed mode for the autopilot. DEPRECATED
heading_mode	int	660+	no	enum	Lateral navigation mode (GPS, heading, L-Nav approach). DEPRECATED
altitude_mode	int	660+	no	enum	Vertical navigation (alt hold, VVI hold, V-Nav approach). DEPRECATED
backcourse_on	int	660+	yes	boolean	Back course selection
approach_selector	int	660-700	yes	enum	Nav1 or Nav2 approach selection
altitude	float	660+	yes	ftmsl	Altitude dialed into the AP
current_altitude	float	710+	yes	ftmsl	Currently held altitude (remembered until you hit flchg)
vertical_velocity	float	660+	yes	fpm	Vertical speed to hold
airspeed	float	660+	yes	knots_mach	Airspeed to hold, this changes from knots to a mach number
heading	float	660+	yes	degt	The heading to fly (true, legacy)
heading_mag	float	710+	yes	degm	The heading to fly (magnetic, preferred) pilot
heading_mag2	float	820+	yes	degm	The heading to fly (magnetic, preferred) copilot
airspeed_is_mach	int	660+	no	boolean	Is our airspeed a mach number
flight_director_pitch	float	660+	yes	degrees	The recommended pitch from the Flight Director. Use override_flightdir
flight_director_roll	float	660+	yes	degrees	The recommended roll from the Flight Director. Use override_flightdir
autopilot_state	int	710+	yes	flags	Various autopilot engage modes, etc.
heading_roll_mode	int	804+	yes	enum	Bank limit - 0 = auto, 1-6 = 5-30 degrees of bank
mode_hnav	int	820+	yes	???	???
mode_gls	int	820+	yes	???	???
alt_hold_ft_fms	float	820+	yes	???	???
syn_hold_deg	float	820+	yes	???	???
sim/cockpit/electrical/
battery_on	int	660+	yes	bool	Is the main battery on
battery_array_on	int[8]	820+	yes	bool	Is the battery selected on
battery_EQ	int	660+	no	bool	Does this cockpit have a battery switch
avionics_on	int	660+	yes	bool	Is there power to the avionics
avionics_EQ	int	660+	yes	bool	Does this cockpit have an avionics switch
generator_on	int[8]	660+	yes	bool	Is the generator on (to charge batteries) - one for each engine
generator_EQ	int	660+	yes	bool	Does this cockpit have generator switches?
generator_apu_on	int	840+	yes	bool	Is the APU Generator on
generator_apu_amps	float	840+	yes	amps	APU Generator amps
HUD_on	int	660+	yes	bool	Is the HUD on
HUD_brightness	float	660+	yes	ratio	HUD brightness level (0-1)
beacon_lights_on	int	660+	yes	bool	Beacon Light
landing_lights_on	int	660+	yes	bool	Landing Light
nav_lights_on	int	660+	yes	bool	Navigation Light
strobe_lights_on	int	660+	yes	bool	Strobe Light
taxi_light_on	int	710+	yes	bool	Taxi Lights
cockpit_lights_on	int	660+	no	bool	Are cockpit lights on. (NOTE - previous docs were wrong, this is always read-only)
cockpit_lights	float	660+	yes	ratio	Cockpit light level
instrument_brightness	float	762+	yes	ratio	Instrument LED lighting level
sunglasses_on	int	762+	yes	bool	Sunglasses on?
night_vision_on	int	762+	yes	bool	Night vision goggles on?
ah_bar	float	660+	yes	???	Cockpit light reostat - this appears to be legacy and no longer used.
sim/cockpit/engine/
inverter_on	int[8]	660+	yes	bool	Is the inverter providing power (one per engine)
inverter_eq	int	660+	yes	bool	Does this cockpit have inverter switches?
fuel_pump_on	int[8]	660+	yes	bool	Is the fuel pump on (one per engine)
fuel_pump_EQ	int	660+	yes	bool	Does this cockpit have fuel pumps?
fadec_on	int[8]	660+	yes	sizeof(flt[p0].engn[0])	bool Is the fadec on (one per engine)
idle_speed	int[8]	660+	yes	bool	Idle speed (per engine)
fuel_tank_selector	int	660+	yes	???	Which fuel tank is open for flight
fuel_tank_transfer	int	660+	yes	???	Which fuel tank is open for transfers (destination)
fuel_tank_transfer_from	int	820+	yes	???	Which fuel tank is open for transfers (source)
ignition_on	int[8]	660+	yes	enum	ignition key position
igniters_on	int[8]	660+	yes	boolean	starter ignition
starter_duration	float[8]	660+	yes	seconds	time since ignition was pressed or something
clutch_engage	int	660+	yes	???	Clutch engaged
APU_switch	int	804+	yes	enum	APU starter switch 0 = off, 1 = on, 2 = start
APU_running	int	804+	yes	boolean	APU running - 1 = on, 0 = off.
APU_N1	float	820+	yes	???	???
sim/cockpit/gps/
course	float	660+	no	???	The currently programmed GPS course (true degrees)
destination_type	int	660+	yes	???	The current type of navaid we're flying to
destination_index	int	660+	yes	???	The index of the navaid we're flying to
airport_index	int	660-811	yes	???	The index of the last set airport
vor_index	int	660-811	yes	???	The index of the last set VOR
ndb_index	int	660-811	yes	???	The index of the last set NDB
fix_index	int	660-811	yes	???	The index of the last set fix
sim/cockpit/gyros/
the_vac_ind_deg	float	740+	yes	degrees	The indicated pitch on the panel for the first vaccum instrument
psi_vac_ind_degm	float	740+	yes	degrees	The indicated heading on the panel for the first vacuum instrument
phi_vac_ind_deg	float	740+	yes	degrees	The indicated roll on the panel for the first vacuum instrument
the_ele_ind_deg	float	740+	yes	degrees	The indicated pitch on the panel for the second vaccum instrument
psi_ele_ind_degm	float	740+	yes	degrees	The indicated heading on the panel for the second vaccum instrument
phi_ele_ind_deg	float	740+	yes	degrees	The indicated roll on the panel for the second vaccum instrument
the_ind_deg3	float	850+	yes	degrees	The indicated pitch on the panel for the first elect instrument
psi_ind_degm3	float	850+	yes	degrees	The indicated heading on the panel for the first elect instrument
phi_ind_deg3	float	850+	yes	degrees	The indicated roll on the panel for the first elect instrument
the_ind_deg4	float	850+	yes	degrees	The indicated pitch on the panel for the second elect instrument
psi_ind_degm4	float	850+	yes	degrees	The indicated heading on the panel for the second elect instrument
phi_ind_deg4	float	850+	yes	degrees	The indicated roll on the panel for the second elect instrument
dg_drift_vac_deg	float	850+	yes	degrees A delta between the plane's heading and the DG for vacuum powered	DGs
dg_drift_ele_deg	float	850+	yes	degrees A delta between the plane's heading and the DG for electric powered	DGs
gyr_force	float[4]	820+	yes	???	???
gyr_spin	float[4]	820+	yes	???	???
sim/cockpit/misc/
has_radar	float	660+	no	???	Does this aircraft have weather radar?
outer_marker_lit	int	660+	no	???	Is the outer marker beacon lit right now
middle_marker_lit	int	660+	no	???	Is the middle marker beacon lit right now
inner_marker_lit	int	660+	no	???	Is the inner marker beacon lit right now
over_outer_marker	int	850+	yes	???	Are we over the outer marker beacon
over_middle_marker	int	850+	yes	???	Are we over the middle marker beacon
over_inner_marker	int	850+	yes	???	Are we over the inner marker beacon
barometer_setting	float	660+	yes	???	The pilots altimeter setting
barometer_setting2	float	820+	yes	???	The copilots altimeter setting
radio_altimeter_minimum	float	660+	yes	Feet	The decision height for the radio altimeter
show_path	float	660+	yes	???	Show our path as we fly?
vacuum	float	660+	yes	???	Vacuum Ratio
vacuum2	float	810+	yes	???	Vacuum 2 Ratio
ah_adjust	float	740+	yes	pixels	Adjustment to the artificial horizon bars (pilot)
ah_adjust2	float	850+	yes	pixels	Adjustment to the artificial horizon bars (copilot)
sim/cockpit/pressure/
bleed_air_on	int	660+	yes	bool	Bleeding air is on (legacy)
bleed_air_mode	int	804+	yes	enum	0=off,1=L,2=B,3=R,4=APU
cabin_altitude_set_m_msl	float	660+	yes	???	The desired cabin altitude (BEFORE 730 this was incorrectly int type)
cabin_vvi_set_m_msec	float	660+	yes	???	The desired cabin altitude rate change (BEFORE 730 this was incorrectly int type)
cabin_altitude_actual_m_msl	float	660+	no	???	The real cabin altitude (BEFORE 730 this was incorrectly int type)
cabin_vvi_actual_m_msec	float	660+	no	???	The real cabin altitude rate change (BEFORE 730 this was incorrectly int type)
pressure_test_timeout	float	660+	yes	???	Timeout for some kind of pressure test/
max_allowable_altitude	float	660+	yes	???	Max altitude the plane can keep pressure at?
dump_all	int	820+	yes	bool	Pressure dump switch
dump_to_alt	int	820+	yes	bool	Pressure dump to altitude switch
sim/cockpit/radios/
nav1_freq_hz	int	660+	yes	Hz	The current frequency of the nav1 radio.
nav2_freq_hz	int	660+	yes	Hz	The current frequency of the nav2 radio.
com1_freq_hz	int	660+	yes	Hz	The current frequency of the copm1 radio.
com2_freq_hz	int	660+	yes	Hz	The current frequency of the com2 radio.
adf1_freq_hz	int	660+	yes	Hz	The current frequency of the first automatic direction finder.
adf2_freq_hz	int	660+	yes	Hz	The current frequency of the second automatic direction finder.
dme_freq_hz	int	660+	yes	Hz	The current frequency of the standalone DME receiver.
nav1_stdby_freq_hz	int	660+	yes	Hz	The standby frequency for the radio mentioned above for flip/flop radios.
nav2_stdby_freq_hz	int	660+	yes	Hz	The standby frequency for the radio mentioned above for flip/flop radios.
com1_stdby_freq_hz	int	660+	yes	Hz	The standby frequency for the radio mentioned above for flip/flop radios.
com2_stdby_freq_hz	int	660+	yes	Hz	The standby frequency for the radio mentioned above for flip/flop radios.
adf1_stdby_freq_hz	int	660+	yes	Hz	The standby frequency for the radio mentioned above for flip/flop radios.
adf2_stdby_freq_hz	int	660+	yes	Hz