diff --git a/utils/fgcom/fgcom_external.cxx b/utils/fgcom/fgcom_external.cxx
index fb2864d..edd0991 100644
--- a/utils/fgcom/fgcom_external.cxx
+++ b/utils/fgcom/fgcom_external.cxx
@@ -373,6 +373,9 @@ std::string getClosestAirportForFreq(double freq, double acftLat, double acftLon
 
 bool isInRange(std::string icao, double acftLat, double acftLon, double acftAlt)
 {
+    // zhongjin 测试环境，始终返回1
+    return true;
+
     for(size_t i=0; i<sizeof(special_freq)/sizeof(special_freq[0]); i++) { // Check if it's a special freq
       if( special_freq[i] == _currentFreqKhz )
         return true;