double d = curAlt - _waypt->altitudeFt();
if (fabs(d) < 50.0) {
SG_LOG(SG_INSTR, SG_INFO, "ConstHdgToAltCtl, reached target altitude " << _waypt->altitudeFt());
double d = curAlt - _waypt->altitudeFt();
if (fabs(d) < 50.0) {
SG_LOG(SG_INSTR, SG_INFO, "ConstHdgToAltCtl, reached target altitude " << _waypt->altitudeFt());