There appears to be an internal server error when telling Simbrief to avoid XX03 NO FIR airspace. I have attempted this with multiple routes that cross through XX03 and receive the same message. Is this a current known limitation of simbrief or is there a bug somewhere?
Hi, yes this can happen sometimes when trying to generate certain routes or avoid certain FIRs. It’s a known issue.
The route generator will need to be completely redesigned at some point, but likely not very soon. For now there isn’t much you can do to work around the error I’m afraid, other than perhaps try some different route parameters (for example, try including a known fix that would take you around the FIR, or try avoiding a nearby FIR instead).
You can also check the other suggested routes to see if one of those avoids the FIR in question.
Best regards,