Flaps

A round flap position indicator: a white flap swings down from the wing's trailing edge over a scale from UP to FULL. The FLAPS knob moves the simulator's flaps one position at a time.

Modeled on: Cessna 172-style flap position indicator (generic round dial)
Category: Airframe
Size: 1 cell
Version: 1.0 · 2026-10-19
Plan: Pro
Simulators: MSFS 2020 · MSFS 2024 · X-Plane 11 · X-Plane 12

Features

Flap drawn hinged at the wing, swinging over a scale marked UP, 10-degree steps and FULL
Full scale 30 degrees for up to three positions (172), else 40
Handle position readout (HANDLE n / total)
Red X when the flap angle is missing
Night lighting: the face takes the panel's red flood light, the glareshield's warm light from above (stronger for instruments higher on the page) and its own light, a lamp hidden at the top of the case lighting the dial downward (Settings > Dimmers: Red flood light, Glareshield, Instruments (analog))

Your aircraft: Scale range from the simulator's number of flap positions (30 or 40 degrees full).

On the iPad

Drag the FLAPS knob down for more flaps, up for less (one position per 34 px)
Tap elsewhere on the face to change the instrument

Keys and controllers

Map any of these to a key, a game controller's button or axis, or a MIDI knob (how):

Flaps +
Flaps -

Simulator data

What the Hub reads from the simulator for this instrument, and what the instrument sends back. Names are the simulators' own: MSFS SimVars and events, X-Plane datarefs and commands.

Reads

Value	MSFS	X-Plane
Trailing edge flaps angle (deg)	`TRAILING EDGE FLAPS LEFT ANGLE (degrees)`	`sim/flightmodel2/wing/flap1_deg[0]`
Flap handle position, 0 = up (index)	`FLAPS HANDLE INDEX (number)`	`sim/cockpit2/controls/flap_handle_deploy_ratiosim/aircraft/controls/acf_flap_detents`
Number of flap handle positions (count)	`FLAPS NUM HANDLE POSITIONS (number)`	`sim/aircraft/controls/acf_flap_detents`