diff --git a/src/main/java/com/palnet/biz/api/bas/dron/service/BasDronService.java b/src/main/java/com/palnet/biz/api/bas/dron/service/BasDronService.java
index 4a86879..cc78c9c 100644
--- a/src/main/java/com/palnet/biz/api/bas/dron/service/BasDronService.java
+++ b/src/main/java/com/palnet/biz/api/bas/dron/service/BasDronService.java
@@ -82,8 +82,9 @@ public class BasDronService {
 		List<BasIdntfModel> resultList = query.idntfList(arcrftSno);
 
 		for(BasIdntfModel model : resultList){
-
-			model.setHpno(EncryptUtils.decrypt(model.getHpno()));
+			if(model.getHpno() != null && !model.getHpno().isEmpty()){
+				model.setHpno(EncryptUtils.decrypt(model.getHpno()));
+			}
 		}
 
 		return resultList;