sigh

code/game/machinery/shuttle/shuttle_engine.dm

@@ -57,7 +57,16 @@
 	. = ..()
 	check_setup()
 
+/obj/machinery/shuttle/engine/Destroy()
+	attached_heater = FALSE
+	thruster_active = FALSE
+	return ..()
+
 /obj/machinery/shuttle/engine/proc/check_setup()
+	if(!anchored)
+		attached_heater = null
+		update_engine()
+		return
 	var/heater_turf
 	switch(dir)
 		if(NORTH)
@@ -124,15 +133,6 @@
 	env.temperature += deltaTemperature
 	air_update_turf()
 
-/obj/machinery/shuttle/engine/attackby(obj/item/I, mob/living/user, params)
-	check_setup()
-	if(default_deconstruction_screwdriver(user, icon_state_open, icon_state_closed, I))
-		return
-	if(default_pry_open(I))
-		return
-	if(panel_open)
-		if(default_change_direction_wrench(user, I))
-			return
-	if(default_deconstruction_crowbar(I))
-		return
-	return ..()
+/obj/machinery/shuttle/engine/default_change_direction_wrench(mob/user, obj/item/I)
+	. = ..()
+	update_engine()