diff --git a/tests/bufr_extract_headers.sh b/tests/bufr_extract_headers.sh
index 32cd620ec..1b7961cb4 100755
--- a/tests/bufr_extract_headers.sh
+++ b/tests/bufr_extract_headers.sh
@@ -99,8 +99,8 @@ for bf in ${bufr_files}; do
 done
 
 
-# BUFRs with localLatitude1, localLongitude2 etc
-# ----------------------------------------------
+# BUFRs with specific keys to compare
+# ------------------------------------
 bufr_files="
 aaen_55.bufr
 aben_55.bufr
@@ -179,21 +179,16 @@ modw_87.bufr
 monw_87.bufr
 nomi_206.bufr
 nos1_208.bufr
-nos2_208.bufr
 nos3_208.bufr
 nos4_208.bufr
-nos5_208.bufr
 nos6_208.bufr
-nos7_208.bufr
 nos8_208.bufr
 pgps_110.bufr
-rada_250.bufr
 rado_250.bufr
 s4kn_165.bufr
 sb19_206.bufr
 sbu8_206.bufr
 smin_49.bufr
-smis_49.bufr
 smiu_49.bufr
 smos_203.bufr
 sn4k_165.bufr
@@ -203,6 +198,7 @@ tropical_cyclone.bufr
 tros_31.bufr
 "
 
+# ECC-1744: Do not compare floating-point keys like localLatitude1, localLongitude2
 KEYS='typicalDate,localNumberOfObservations,satelliteID,restricted'
 for bf in ${bufr_files}; do
     input=${data_dir}/bufr/$bf
diff --git a/tests/grib_tigge_conversions1.sh b/tests/grib_tigge_conversions1.sh
index 0147738f8..848798d9e 100755
--- a/tests/grib_tigge_conversions1.sh
+++ b/tests/grib_tigge_conversions1.sh
@@ -31,7 +31,7 @@ fi
 # --- Do I want to exclude any file pattern from the comparison ?
 exclusion_pattern="tcw|ssr|str|skt|cap|ci|ttr|st|sm|sd|slhf|sshf"
 
-# Some very small floating-point differences shown for these
+# ECC-1744: Some very small floating-point differences shown for these
 blacklist="-b iDirectionIncrementInDegrees,jDirectionIncrementInDegrees"
 
 for file in ${dir}/tigge_[a-e]*.grib; do
diff --git a/tests/grib_tigge_conversions2.sh b/tests/grib_tigge_conversions2.sh
index 73b7a5455..a07fbdcb2 100755
--- a/tests/grib_tigge_conversions2.sh
+++ b/tests/grib_tigge_conversions2.sh
@@ -30,7 +30,7 @@ fi
 # --- Do I want to exclude any file pattern from the comparison ?
 exclusion_pattern="tcw|ssr|str|skt|cap|ci|ttr|st|sm|sd|slhf|sshf"
 
-# Some very small floating-point differences shown for these
+# ECC-1744: Some very small floating-point differences shown for these
 blacklist="-b iDirectionIncrementInDegrees,jDirectionIncrementInDegrees"
 
 for file in ${dir}/tigge_[f-z]*.grib; do