diff --git a/src/main/java/com/palnet/biz/api/bas/flight/service/BasFlightService.java b/src/main/java/com/palnet/biz/api/bas/flight/service/BasFlightService.java
index 72543f7..30c0e9e 100644
--- a/src/main/java/com/palnet/biz/api/bas/flight/service/BasFlightService.java
+++ b/src/main/java/com/palnet/biz/api/bas/flight/service/BasFlightService.java
@@ -672,7 +672,7 @@ public class BasFlightService {
     			return readBody(con.getErrorStream());
     		}
 		} catch (IOException e) {
-			throw new RuntimeException("API 요청과 응답 실패", e);
+			throw new RuntimeException("API Request and Response Fail", e);
 		} finally {
 			con.disconnect();
 		}
@@ -683,9 +683,9 @@ public class BasFlightService {
     		URL url = new URL(apiUrl);
     		return (HttpURLConnection)url.openConnection();
     	} catch (MalformedURLException e) {
-    		throw new RuntimeException("API URL이 잘못되었습니다. : " + apiUrl, e);
+    		throw new RuntimeException("Invalid API URL. : " + apiUrl, e);
     	} catch (IOException e) {
-    		throw new RuntimeException("연결이 실패했습니다. : " + apiUrl, e);
+    		throw new RuntimeException("Connection Fail. : " + apiUrl, e);
     	}
     }
     
@@ -695,14 +695,15 @@ public class BasFlightService {
     	try(BufferedReader lineReader = new BufferedReader(streamReader)) {
     		StringBuilder responseBody = new StringBuilder();
     		
-    		String line;
-    		while ((line = lineReader.readLine()) != null) {
+    		String line = lineReader.readLine();
+    		while (line != null) {
     			responseBody.append(line);
+                line = lineReader.readLine();
     		}
     		
     		return responseBody.toString();
     	} catch (IOException e) {
-    		throw new RuntimeException("API 응답을 읽는데 실패했습니다.", e);
+    		throw new RuntimeException("Fail to read API Response", e);
     	}
     }
 
@@ -734,10 +735,11 @@ public class BasFlightService {
             rd = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
         }
         StringBuilder sb = new StringBuilder();
-        String line;
+        String line = rd.readLine();
 
-        while ((line = rd.readLine()) != null) {
+        while (line != null) {
             sb.append(line);
+            line = rd.readLine();
 
         }
             CtrTrnsLctnModel weatherResult = ctrTrnsLctnService.convertLatlonToAddress(rq.getNx2(),rq.getNy2());
diff --git a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
index 0c8bb31..23e05ff 100644
--- a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
+++ b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
@@ -717,9 +717,10 @@ public class CtrCntrlService {
 			rd = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
 		}
 		StringBuilder sb = new StringBuilder();
-		String line;
-		while ((line = rd.readLine()) != null) {
+		String line = rd.readLine();
+		while (line != null) {
 			sb.append(line);
+			line = rd.readLine();
 		}
 		CtrTrnsLctnModel weatherResult = ctrTrnsLctnService.convertLatlonToAddress(rq.getNx(),rq.getNy());
 		log.info("weatherResult >>>> : {}", weatherResult);
diff --git a/src/main/java/com/palnet/comn/utils/HttpUtils.java b/src/main/java/com/palnet/comn/utils/HttpUtils.java
index e7e1a45..638b043 100644
--- a/src/main/java/com/palnet/comn/utils/HttpUtils.java
+++ b/src/main/java/com/palnet/comn/utils/HttpUtils.java
@@ -57,10 +57,10 @@ public class HttpUtils {
 				response.setHeader ("Content-Length", ""+file.length() );
 				outStream = response.getOutputStream();
 				byte b[] = new byte[(int)file.length()];
-				int leng = 0;
-
-				while( (leng = inputStream.read(b)) > 0 ){
+				int leng = inputStream.read(b);
+				while(leng  > 0 ){
 					outStream.write(b,0,leng);
+					leng = inputStream.read(b);
 				}
 
 			} catch (Exception e) {
@@ -182,9 +182,10 @@ public class HttpUtils {
 
 			if (respCd == HttpStatus.SC_OK) {
 				br = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream()));
-				String readLine;
-				while (((readLine = br.readLine()) != null)) {
+				String readLine = br.readLine();
+				while (readLine != null) {
 					log.info(readLine);
+					readLine = br.readLine();
 				}
 			} else {
 				log.error("respCd: {}", respCd);