With KORD, do you mean FSDT KORD V2 ? If yes, please indicate the gate used.
Also, is not clear what do you mean with 182 passengers to load. Is this:
- A number estimated by GSX, because you have the "Estimate passenger number" option enabled in GSX
OR
- A number you inserted manually in GSX, because you have the "Estimate passenger number" option Disabled in GSX
OR
- A number you have in the PMDG FMC, which doesn't have any relationship to GSX ( so the number used by GSX is the one of the first two options )
In any case, I tried the NGXu with 182 passengers ( set manually in GSX ) at KORD V2 Gate C4, and boarding completed with no problems, see the attached screenshot.