For complete workflow compatibility, we recommend downloading the Original format.The viewer version is intended exclusively for browser preview. In the source file, the following are fully preserved:✔ original scene hierarchy✔ all materials without simplification✔ proper texture maps✔ proper object namingIf you plan to use this model in production, select the original version.A passenger aircraft with an open landing gear can be used as a parked aircraft. For a flying aircraft the landing gear should be removed.