Avionics Overview

• Removed the button clicks on the soft buttons of GNS 430/530, KAP 140, KT 76C and KR 87. The volume knobs only click on their Off detent.

GNS 530/430

The GNS units shipped with the mod are exclusive to it. My changes should not affect GNS units in any other aircraft. The changes are discussed here.

KR 87 (ADF)

I forked the KR 87 mainly to enable persistence for its frequencies, to add an LCD ghost to the display, and to fix a tiny bug that has ben bothering me forever: changing frequencies or modes worked while the unit was off, as if it was a mechanical unit.

DME Control Head

The DME control head is missing in the visual model. I added a representation inspired by an era-correct Bendix/King KN 62 to the Instruments tab of the EFB app.

Note

The KN 62 doesn't show a station ident, instead it feeds an audio channel to the audio panel (that's why it has a DME button) in order for the pilot to identify the Morse identifier of the station.

Since the sim doesn't seem to generate Morse identifiers for DME stations, I added the ident as text to the virtual instrument.

For convenience, the in-cockpit chronometers have a DME mode that shows either distance in nm, relative speed in kts, or time to station in minutes. In DME mode, the chronometers display the data for the station that has been selected in the EFB app, or "NO DME".

L:vars

R is read-only state; R/W can be set.

L:var	R/W	Meaning
DHC6_ALT_ALERT	R	Altitude alert state
DHC6_ALT_ALERT_LIGHT	R	Altitude alert lamp

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Reviewed 2026-08-20.