Due to addition of dump1090-fa was forced bacdk to gettting JSON using http.

build/portal/logging/flights.py

@@ -39,7 +39,7 @@ import datetime
 import json
 import time
 import os
-#import urllib2
+import urllib2
 
 def log(string):
     #print(string) # uncomment to enable debug logging
@@ -187,11 +187,14 @@ if __name__ == "__main__":
     # Main run loop
     while True:
         # Read dump1090-mutability's aircraft.json.
-        with open('/run/dump1090-mutability/aircraft.json') as data_file:
-            data = json.load(data_file)
-        # For testing using a remote JSON feed.
-        #response = urllib2.urlopen('http://192.168.254.2/dump1090/data/aircraft.json')
-        #data = json.load(response)
+        #with open('/run/dump1090-mutability/aircraft.json') as data_file:
+        #    data = json.load(data_file)
+
+        # Switch from physical file location to using urllib2 after the addition of the dump1090-fa option.
+        # dump1090-fa and dump1090-mutability store aircraft.json in difrent locations.
+        # However Lighttpd is set up to serve this file using the same URL no matter which version is installed.
+        response = urllib2.urlopen('http://192.168.254.2/dump1090/data/aircraft.json')
+        data = json.load(response)
 
         processor.processAircraftList(data["aircraft"])