diff --git a/mission_yaml/SEA66_M58.yml b/mission_yaml/SEA66_M58.yml
index 6e4b6f8..d346556 100644
--- a/mission_yaml/SEA66_M58.yml
+++ b/mission_yaml/SEA66_M58.yml
@@ -29,7 +29,7 @@ metadata:
   glider_name: Saltarv
   glider_serial: '66'
   wmo_id: '6801505'
-  comment: ' Glider flew on zt/zs=2 and alt=2 for full mission duration. Occationally it flew on a faster vertical speed. Be aware of negative values of legato pressure. This affects legato temperature and salinity data for these instances. The cause is likely dirt from watercolumn on the pressures sensor '
+  comment: ' Glider flew on zt/zs=2 and alt=2 for full mission duration. Occationally it flew on a faster vertical speed. Be aware of negative values of legato pressure. This affects legato temperature and salinity data for these instances, see qc '
   contributor_name: Callum Rollo, Louise Biddle, Olle Petersson, Aleksandra Mazur,
     Marcus Melin, Gunnar Johnsson, Andrew Birkett, Michaela Edwinson
   contributor_role: Data Processor, PI, Head of Operations, Glider Technician, Glider
@@ -433,3 +433,12 @@ netcdf_variables:
     standard_name: platform_beam1_measure_ad2cp_cell1
     units: m s-1
     coordinates: time depth latitude longitude
+qc:
+  pressure:
+    value: 4
+    comment: 'Negative values from the legato pressure sensor. Possible cause could be dirt on pressure sensor.'
+    start: '2024-08-28'
+  temperature:
+    value: 4
+    comment: 'Negative values from the legato pressure sensor giving bad values for temperature and salinity. Possible cause could be dirt on pressure sensor.'
+    start: '2024-08-28'
\ No newline at end of file