start support for Boeing icing data...

modules/icing/pireps.py

@@ -182,7 +182,7 @@ def pirep_icing_from_boeing(dirname='/ships19/cloud/scratch/ICING/BOEING/icing/2
             hours = h5f['hour'][:]
             mins = h5f['minute'][:]
             secs = h5f['second'][:]
-            flt_levs = h5f['aircraft_ft'][:]
+            flt_levs = h5f['altitude_ft'][:]
             flt_levs *= (100 * 0.3048)
         except Exception as e:
             print(e)