// Based on the airport-id and wind get the active runway
const FGAirport* apt = fgFindAirportID(ident);
- assert(apt);
+ if (!apt) {
+ SG_LOG(SG_ATC, SG_WARN, "FGTower::DoRwyDetails: unknown ICAO:" << ident);
+ return;
+ }
+
FGRunway* runway = apt->getActiveRunwayForUsage();
activeRwy = runway->ident();