diff --git a/Aircraft/c172p/Instruments/kr87-adf/kr87.xml b/Aircraft/c172p/Instruments/kr87-adf/kr87.xml
index d9a4311a6..811eb9229 100644
--- a/Aircraft/c172p/Instruments/kr87-adf/kr87.xml
+++ b/Aircraft/c172p/Instruments/kr87-adf/kr87.xml
@@ -11,8 +11,7 @@
select
indicator
- /instrumentation/adf[0]/serviceable
- /instrumentation/adf[0]/power-btn
+ /instrumentation/adf[0]/operable
diff --git a/Aircraft/c172p/Nasal/kma20.nas b/Aircraft/c172p/Nasal/kma20.nas
new file mode 100644
index 000000000..e8770762e
--- /dev/null
+++ b/Aircraft/c172p/Nasal/kma20.nas
@@ -0,0 +1,41 @@
+##################################################################
+#
+# These are the helper functions for the kma20 audio panel
+# Maintainer: Thorsten Brehm (brehmt at gmail dot com)
+#
+# Usage:
+# just create one instance of kma20 class for each kma20 panel
+# you have in your aircraft:
+# kma20.new(0);
+#
+# KMA20 audio panel properties:
+# root: /instrumentation/kma20
+# knob: microphone/radio selector (com1/2)
+# auto: selects COM1/2 based on microphone selector
+# com1: enable/disable COM1 audio (e.g. for ATIS)
+# com2: enable/disable COM2 audio (e.g. for ATIS)
+# nav1: enable/disable NAV1 station identifier
+# nav2: enable/disable NAV2 station identifier
+# adf: enable/disable ADF station identifier
+# dme: enable/disable DME station identifier
+# mkr: enable/disable marker beacon audio
+# sens: beacon receiver sensitivity
+
+var kma20 = {};
+
+kma20.new = func(rootPath) {
+ var obj = {};
+ obj.parents = [kma20];
+
+ setlistener(rootPath ~ "/com1", func(v) {setprop("/instrumentation/comm/volume", 0.7*(v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/com2", func(v) {setprop("/instrumentation/comm[1]/volume", 0.7*(v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/nav1", func(v) {setprop("/instrumentation/nav/audio-btn", (v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/nav2", func(v) {setprop("/instrumentation/nav[1]/audio-btn", (v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/adf", func(v) {setprop("/instrumentation/adf/ident-audible", (v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/dme", func(v) {setprop("/instrumentation/dme/ident", (v.getValue() != 0));}, 1);
+ setlistener(rootPath ~ "/mkr", func(v) {setprop("/instrumentation/marker-beacon/audio-btn",(v.getValue() != 0));}, 1);
+ print( "KMA20 audio panel initialized" );
+ return obj;
+};
+
+var kma20_0 = kma20.new( "/instrumentation/kma20" );
diff --git a/Aircraft/c172p/c172p-set.xml b/Aircraft/c172p/c172p-set.xml
index 19b41cc56..f27dffcc8 100644
--- a/Aircraft/c172p/c172p-set.xml
+++ b/Aircraft/c172p/c172p-set.xml
@@ -195,6 +195,16 @@ Started October 23 2001 by John Check, fgpanels@rockfish.net
true
+
+ false
+ 0.7
+
+
+
@@ -214,6 +224,7 @@ Started October 23 2001 by John Check, fgpanels@rockfish.net
Aircraft/c172p/Nasal/doors.nas
Aircraft/c172p/Nasal/light.nas
Aircraft/c172p/Nasal/tanks.nas
+ Aircraft/c172p/Nasal/kma20.nas
Aircraft/c172p/Nasal/ki266.nas