Trim

An elevator trim indicator with a vertical scale from NOSE DN to NOSE UP and a takeoff band, plus rudder and aileron trim bars when the aircraft uses them. The TRIM knob trims the simulator's elevator.

Modeled on: Cessna 172-style elevator trim 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

Orange pointer on a vertical scale, NOSE DN at the top, NOSE UP at the bottom
T/O band slightly nose up of neutral
Rudder (RUD) and aileron (AIL) trim bars appear only when those trims are deflected
Red X when elevator trim 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))

On the iPad

Drag the TRIM knob down for nose up, up for nose down (1 % per 6 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):

Elevator trim (nose up +) +
Elevator trim (nose up +) -

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
Elevator trim, -1..1, + nose up	`ELEVATOR TRIM PCT (percent over 100)`	`sim/cockpit2/controls/elevator_trim`
Rudder trim, -1..1, + right	`RUDDER TRIM PCT (percent over 100)`	`sim/cockpit2/controls/rudder_trim`
Aileron trim, -1..1, + right	`AILERON TRIM PCT (percent over 100)`	`sim/cockpit2/controls/aileron_trim`