diff --git a/pysatMadrigal/instruments/madrigal_pandas.py b/pysatMadrigal/instruments/madrigal_pandas.py
index adf1ee8..57fb6bd 100644
--- a/pysatMadrigal/instruments/madrigal_pandas.py
+++ b/pysatMadrigal/instruments/madrigal_pandas.py
@@ -75,13 +75,15 @@
 name = 'pandas'
 tags = dict()
 pandas_format = True
+excluded_tags = ['8105']  # Pandas-style data that requires special support
 
 # Assign only tags with pysat-compatible file format strings
 pandas_codes = general.known_madrigal_inst_codes(pandas_format=True)
 for tag in pandas_codes.keys():
     try:
         general.madrigal_file_format_str(tag, strict=True)
-        tags[tag] = pandas_codes[tag]
+        if tag not in excluded_tags:
+            tags[tag] = pandas_codes[tag]
     except ValueError:
         pass
 
@@ -102,7 +104,7 @@
 tag_dates = {'120': dt.datetime(1963, 11, 27), '170': dt.datetime(1998, 7, 1),
              '180': dt.datetime(2000, 1, 1), '210': dt.datetime(1950, 1, 1),
              '211': dt.datetime(1978, 1, 1), '212': dt.datetime(1957, 1, 1),
-             '7800': dt.datetime(2009, 11, 10), '8105': dt.datetime(2017, 9, 1)}
+             '7800': dt.datetime(2009, 11, 10)}
 _test_dates = {'': {tag: tag_dates[tag] if tag in tag_dates.keys()
                     else tag_dates['7800'] for tag in tags.keys()}}
 _test_download = {'': {tag: True for tag in tags.keys()}}