P.s. The front loader didn't comes to the Aircraft (Fenix A320 and PMDG 737--600) to deboarding
The front loader, like any other service vehicle, comes or not depending on the airplane configuration, and the one we set by default for both airplanes surely provides for a front loader.
The front loader might not come if:
- The airport profile has explicitly disabled it.
- You have a custom airplane profile you either made yourself or downloaded, which disabled the loaders OR set the cargo door with the wrong height (too low, for example), preventing the loaded to appear.
However, the boarding should complete even with only one loader.