diff --git a/OpenRA.Mods.Common/Activities/Air/HeliFly.cs b/OpenRA.Mods.Common/Activities/Air/HeliFly.cs
index 8c71abf7e1..55504ad586 100644
--- a/OpenRA.Mods.Common/Activities/Air/HeliFly.cs
+++ b/OpenRA.Mods.Common/Activities/Air/HeliFly.cs
@@ -21,6 +21,7 @@ namespace OpenRA.Mods.Common.Activities
 		readonly Target target;
 		readonly WDist maxRange;
 		readonly WDist minRange;
+		bool playedSound;
 
 		public HeliFly(Actor self, Target t)
 		{
@@ -53,6 +54,12 @@ namespace OpenRA.Mods.Common.Activities
 			if (IsCanceled || !target.IsValidFor(self))
 				return NextActivity;
 
+			if (!playedSound && helicopter.Info.TakeoffSound != null && self.IsAtGroundLevel())
+			{
+				Sound.Play(helicopter.Info.TakeoffSound);
+				playedSound = true;
+			}
+
 			if (AdjustAltitude(self, helicopter, helicopter.Info.CruiseAltitude))
 				return this;
 
diff --git a/OpenRA.Mods.Common/Activities/Air/HeliLand.cs b/OpenRA.Mods.Common/Activities/Air/HeliLand.cs
index 9f191f539d..509e4f98ef 100644
--- a/OpenRA.Mods.Common/Activities/Air/HeliLand.cs
+++ b/OpenRA.Mods.Common/Activities/Air/HeliLand.cs
@@ -16,14 +16,13 @@ namespace OpenRA.Mods.Common.Activities
 	public class HeliLand : Activity
 	{
 		readonly Helicopter helicopter;
-		readonly WDist landAltitude;
 		bool requireSpace;
+		bool playedSound;
 
 		public HeliLand(Actor self, bool requireSpace)
 		{
 			this.requireSpace = requireSpace;
 			helicopter = self.Trait<Helicopter>();
-			landAltitude = helicopter.Info.LandAltitude;
 		}
 
 		public override Activity Tick(Actor self)
@@ -34,7 +33,13 @@ namespace OpenRA.Mods.Common.Activities
 			if (requireSpace && !helicopter.CanLand(self.Location))
 				return this;
 
-			if (HeliFly.AdjustAltitude(self, helicopter, landAltitude))
+			if (!playedSound && helicopter.Info.LandingSound != null && !self.IsAtGroundLevel())
+			{
+				Sound.Play(helicopter.Info.LandingSound);
+				playedSound = true;
+			}
+
+			if (HeliFly.AdjustAltitude(self, helicopter, helicopter.Info.LandAltitude))
 				return this;
 
 			return NextActivity;
diff --git a/OpenRA.Mods.Common/Traits/Air/Helicopter.cs b/OpenRA.Mods.Common/Traits/Air/Helicopter.cs
index bcea3cbba0..0cf5cdfc13 100644
--- a/OpenRA.Mods.Common/Traits/Air/Helicopter.cs
+++ b/OpenRA.Mods.Common/Traits/Air/Helicopter.cs
@@ -30,6 +30,9 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("How fast the helicopter ascends or descends.")]
 		public readonly WDist AltitudeVelocity = new WDist(43);
 
+		public readonly string TakeoffSound = null;
+		public readonly string LandingSound = null;
+
 		public override object Create(ActorInitializer init) { return new Helicopter(init, this); }
 	}
 
diff --git a/mods/ts/rules/aircraft.yaml b/mods/ts/rules/aircraft.yaml
index b780bce184..846b931d68 100644
--- a/mods/ts/rules/aircraft.yaml
+++ b/mods/ts/rules/aircraft.yaml
@@ -45,6 +45,8 @@ DSHP:
 		Speed: 168
 		InitialFacing: 0
 		LandableTerrainTypes: Clear
+		TakeoffSound: dropup1.aud
+		LandingSound: dropdwn1.aud
 	Health:
 		HP: 200
 	Armor:
@@ -144,12 +146,19 @@ ORCATRAN:
 		Cost: 1200
 	Tooltip:
 		Name: Orca Transport
+	Buildable:
+		Queue: Air
+		BuildPaletteOrder: 10
+		Prerequisites: ~disabled
+	RenderSprites:
 	Helicopter:
 		LandWhenIdle: yes
 		ROT: 5
 		Speed: 84
 		InitialFacing: 0
 		LandableTerrainTypes: Clear
+		TakeoffSound: dropup1.aud
+		LandingSound: dropdwn1.aud
 	Health:
 		HP: 200
 	Armor:
@@ -181,6 +190,9 @@ TRNSPORT:
 		Speed: 149
 		InitialFacing: 0
 		LandableTerrainTypes: Clear
+		TakeoffSound: dropup1.aud
+		LandingSound: dropdwn1.aud
+		AltitudeVelocity: 64
 	Health:
 		HP: 175
 	Armor:
diff --git a/mods/ts/sequences/aircraft.yaml b/mods/ts/sequences/aircraft.yaml
index 0c346425cb..97811dcd46 100644
--- a/mods/ts/sequences/aircraft.yaml
+++ b/mods/ts/sequences/aircraft.yaml
@@ -16,4 +16,7 @@ apache:
 		Length: 4
 	slow-rotor: lrotor
 		Start: 4
-		Length: 8
\ No newline at end of file
+		Length: 8
+
+orcatran:
+	icon: crryicon
\ No newline at end of file