diff --git a/instruments/readers/nasa_ames_reader.py b/instruments/readers/nasa_ames_reader.py
index 5c71f68..1601542 100644
--- a/instruments/readers/nasa_ames_reader.py
+++ b/instruments/readers/nasa_ames_reader.py
@@ -75,22 +75,6 @@ def extract_var_descriptions(part2):
 
     return descriptions
 
-def generate_missing_value_code(max_val, num_decimals):
-    """
-    Generates a missing value code consisting of all 9s.
-    - `max_val`: Largest expected valid value in the column.
-    - `num_decimals`: Number of decimal places to preserve.
-    """
-    # Determine order of magnitude (1-2 orders larger than max value)
-    order = int(np.floor(np.log10(max_val))) + 2 if max_val > 0 else 2
-
-    # Construct the missing value code as all 9s
-    if num_decimals > 0:
-        missing_code = float(f"{'9' * (order + num_decimals)}.{ '9' * num_decimals }")
-    else:
-        missing_code = int('9' * order)
-    
-    return missing_code
 
 
 
@@ -173,11 +157,6 @@ def read_nasa_ames_as_dict(filename, instruments_dir: str = None, work_with_copy
         if 'end_time' in df.columns:
             df['end_time'] = df['end_time'].apply(lambda x: start_date + timedelta(days=x))
 
-        variable_missing_values = []
-        for col in df.columns:
-            missing_value = generate_missing_value_code(df[col].max(skipna=True), 4)
-            variable_missing_values.append(missing_value)            
-
         # Create header metadata dictionary
         header_metadata_dict = {
             'header_length': header_length,
@@ -185,7 +164,6 @@ def read_nasa_ames_as_dict(filename, instruments_dir: str = None, work_with_copy
             #'num_dep_vars': num_dep_vars,
             'variable_names': vars_list,
             'variable_descriptions' : var_descriptions,
-            'variable_missing_values': variable_missing_values,
             'raw_header_part1': part1,
             'raw_header_part2': part2,
             'raw_header_part3': part3