- PropertyManager->Tie("forces/fbx-total-lbs", this, eX, (PMF)&FGAircraft::GetForces);
- PropertyManager->Tie("forces/fby-total-lbs", this, eY, (PMF)&FGAircraft::GetForces);
- PropertyManager->Tie("forces/fbz-total-lbs", this, eZ, (PMF)&FGAircraft::GetForces);
- PropertyManager->Tie("forces/load-factor", this, &FGAircraft::GetNlf);