New update to the SU12 beta was just released, the DC-3 fixes are listed now
• Upside down illegible writing on rear door stairs in Blue stripe Livery.
• Landing light switches are no longer reversed.
• Underside beacon light illuminates correctly.
• Multiple items can now be manually completed with evaluation mode.
• Landing gear text decal is no longer obstructed by open passenger door switch.
• DC-3 Aux tanks correctly feed the engine.
• HUD correctly indicates state of flaps.
• DC-3 cockpit model - Nose rivets remade.
• With the propellers feathered moving the prop control affects all the propellers.
• DC-3 cockpit model - Screws no longer clip through window frame.
• Beacon Light switch is targetable.
• Instrument texture no longer disappears when zooming out in external/showcase view.
• The user can’t hear the wind on takeoff even if all audio is turned off.
• Red yellow cargo image in liveries selection is consistent with livery in free flight.
• Blue stripe image in liveries selection is consistent with livery in free flight.
• Image for ole dusty livery in selection screen does match the livery in free flight.
• Mesh switch turns off and now the state of the switch correctly indicates it is off.
• Carb Air temperature correctly matches sim.
• Beacon light underneath fuselage can now be turned on.
• There is now a switch in cockpit to toggle on/off beacon light.
• Quickview 3 in cockpit camera is positioned correctly.
• Tooltip indicates correct state of Master Ignition switch.
• Off position on the right fuel selector now fixed.
• Cold dark switch use failing to show fuel pressure is fixed.
• Checklist for starting engine now says to wait 2 seconds.
• Scroll wheel issue with Desired Heading knob has been recoded.
• Spawning at night on runway, Cockpit lights now are on.
• Typo present in Hangar Description has been rectified.
• DC-3 Thumbnails now match the model.
• AUX Fuel gauge needles are fixed.
• Incorrect string on AUX fuel weight and balance fixed.
• Hole in cargo doors from inside cargo bay hold fixed.
• Various light leaks fixed.
• Texture improvements throughout the model(s).
https://forums.flightsimulator.com/t/beta-update-1-31-20-0-march-2nd-2023/578837