Index: LMDZ6/branches/contrails/DefLists/context_input_lmdz.xml
===================================================================
--- LMDZ6/branches/contrails/DefLists/context_input_lmdz.xml	(revision 5618)
+++ LMDZ6/branches/contrails/DefLists/context_input_lmdz.xml	(revision 5619)
@@ -397,5 +397,5 @@
 <file_definition>
 
-  <file id="aviation_file" name="aviation" mode="read" output_freq="1mo" type="one_file" time_counter_name="toto" >
+  <file id="aviation_file" name="aviation" enabled="false" mode="read" output_freq="1mo" type="one_file" time_counter_name="toto" >
 
     <field id="KMFLOWN_id" name="seg_length_km" operation="instant"  grid_ref="aviation_grid" freq_offset="1ts"  />
Index: LMDZ6/branches/contrails/libf/phylmd/lmdz_aviation.f90
===================================================================
--- LMDZ6/branches/contrails/libf/phylmd/lmdz_aviation.f90	(revision 5618)
+++ LMDZ6/branches/contrails/libf/phylmd/lmdz_aviation.f90	(revision 5619)
@@ -287,4 +287,7 @@
 
 IF (grid_type==unstructured) THEN
+
+    ! Activate aviation file
+    IF (is_omp_master) CALL xios_set_file_attr("aviation", enabled=.TRUE.)
 
     ! Get number of vertical levels and level values