When opening doors on the PO-30 Orca, they slide backwards. This conflicts with the helicopter's weapon pylons (see screenshot).
The actual Ka-60 doors open frontwards (by sliding on the rails below the windows, rail that actually is mapped on the texture of the PO-30).
Also, the metal bars (weapon holders) just behind the doors are no longer useful and should be removed (see screenshot), as they conflict with the getin/getout animation. {F26140} {F26141} {F26142}