make crashed wing out of rubble

data/json/furniture_and_terrain/furniture-terrains.json

@@ -888,6 +888,34 @@
     ],
     "examine_action": "rubble"
   },
+  {
+    "type": "furniture",
+    "id": "f_plane_wreckage",
+    "name": "metal wreckage from a plane",
+    "description": "A pile of various bent and twisted metals.  Some of it looks pretty rusty, you wouldn't want to cut yourself on this.",
+    "looks_like": "t_scrap_wall_halfway",
+    "symbol": "#",
+    "color": "cyan",
+    "move_cost_mod": 6,
+    "max_volume": "750 L",
+    "required_str": -1,
+    "crafting_pseudo_item": "fake_sharp_metal_wreckage",
+    "flags": [
+      "TRANSPARENT",
+      "UNSTABLE",
+      "ROUGH",
+      "SHARP",
+      "PLACE_ITEM",
+      "MOUNTABLE",
+      "CONTAINER",
+      "SEALED",
+      "ALLOW_FIELD_EFFECT",
+      "SHORT",
+      "SMALL_HIDE",
+      "RUBBLE"
+    ],
+    "examine_action": "rubble"
+  },
   {
     "type": "furniture",
     "id": "f_reactor_meltdown",

data/json/mapgen_palettes/airliner_palette.json

@@ -8,7 +8,6 @@
       ",": "t_soil",
       "d": "t_dirtmound",
       "M": "t_wall_metal",
-      "m": "t_scrap_wall_halfway",
       ".": "t_metal_floor",
       "a": "t_metal_floor",
       "c": "t_metal_floor",
@@ -30,6 +29,7 @@
       "c": "f_counter",
       "f": "f_heavy_duty_fridge",
       "l": "f_locker",
+      "m": "f_plane_wreckage",
       "S": "f_sink",
       "x": "f_console_broken",
       "*": "f_wreckage"