Aviat Pitt Special S2S: Interior Textures Invisible

ISSUE DESCRIPTION

Description of the issue:
In both External & Drone view, the interior textures of the fuselage and cockpit instrument panel are not displayed.

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
The interiors were OK when I last flew the aircraft on 05-30-2025. The screenshots below were taken on 10-22-2025 in SU4 build 1.6.18.0.

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. In free flight, choose the standard livery of the aircraft. Select any parking spot at any airport. For convenience, in daylight & with clear weather.
  2. Start the flight. Notice that in any external view the interior textures of the fuselage are and cockpit instrument panel are not displayed.

YOUR SETTINGS

What peripherals are you using:
N/A

[PC Only] Are you using Developer Mode or have you made any changes to it?
No, No

[PC Only] What GPU (Graphics Card) do you use?
Intel Arc 770 (16GB, v32.0.101.6314)

[PC Only] What other relevant PC specs can you share?

Expand to see my basic PC specs:
Item Setting
CPU i7-12700K (no overclocking or undervolting)
RAM 32 GB 5200 MHz DDR5 CL40 RAM
GPU Intel Arc 770 (16GB, v32.0.101.6314)
REBAR BIOS Setting On
Main MSFS monitor 55" Hisense U7 4K TV @ 120Hz
Secondary monitors Two 32" 1080p 1360 x 768 @ 60 Hz
Internet Starlink, with max download speeds of ~ 200 Mbps
Peripherals Microsoft USB Natural Keyboard, Microsoft USB Wireless Intellimouse Explorer, Xbox 360 Wired Controller, Logitech Extreme 3D Pro
OS Windows 11 Pro 25 H2 v26200.6899 + all OS updates.
MSFS 2024 Edition MS Store Premium Deluxe + all WUs & CUs
No performance-improving applications are installed (e.g. for CPU or GPU improvements).
The Intel Graphics Software App is not in use.
Expand to see my graphics settings
Item Setting
Display Mode Full Screen
HDR10 On
Exposure Compensation EV -1
Full Screen Res 3840 x 2160
Anti-Aliasing TAA
Render scaling 65 (Resolution: 2496 x 1404)
AMD FidelityFX Sharpening 150
Max Frame Rate On
Max Frame Rate Value 60
Frame Generation AMD FSR 3
Framerate Multiplier 2x (N/A)
VSync Off (N/A)
VSync Interval Half refresh rate (N/A)
Dynamic Settings On
Frame Rate Target 30
- -
Global Rendering Quality Custom
Terrain LOD 400
Off Screen Terrain Pre-Cache Ultra
Displacement Mapping On
Buildings High
Trees Medium
Plants Medium
Rocks Medium
Grass Medium
Object LOD 200
Volumetric Clouds Ultra
Texture Resolution High
Anisotropic Filtering 16x
Water Waves Medium
Raytraced Shadows On
Shadow Maps 2048
Terrain Shadows 512
Contact Shadows High
Windshield Effects High
Ambient Occulsion High
Cubemap Reflections 256
Raymarched Reflections Medium
Light Shafts Ultra
Depth of Field Off
Motion Blur Off
Glass Cockpit Refresh Rate High
Characters Quantity Low
Characters Variety Medium
Characters Quality Medium
Airport Services Quantity Low
Airport Service Variety Ultra
Parked Aircraft Quantity Off
Parked Aircraft Variety Ultra
Aircraft Traffic Quantity Medium
Aircraft Traffic Variety Ultra
Road Traffic Medium
Sea Traffic Medium
Fauna Ultra
Seatbelt Visibility On [SU4]
Expand to see my other settings
Item Setting
Online Tab
Photogrammetry On
Aircraft Traffic Type Off
Air Traffic in Career Off
Live Weather On
Multiplayer Off
Multiplayer Servers West USA
Show MP aircraft in close proximity Off
Multiplayer Replication Models High Fidelity (v1.6.18.0)
Rolling Cache 16GB
Bandwidth Unlimited
Flight Model Tab
Flight Model Modern
Advanced Options Tab
Developer Mode Off (Dev-FPS enabled by using the -showFramerate switch)

MEDIA

Can replicate:

Solved in the last SU4 beta

Confirmed. Looks OK in 1.6.21.0:

Drone:

External:

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