code: def is50(msg):
      
  
      if allzeros(msg):
          return False
  
      d = hex2bin(data(msg))
  
      # status bit 1, 12, 24, 35, 46
  
      if wrongstatus(d, 1, 3, 11):
          return False
  
      if wrongstatus(d, 12, 13, 23):
          return False
  
      if wrongstatus(d, 24, 25, 34):
          return False
  
      if wrongstatus(d, 35, 36, 45):
          return False
  
      if wrongstatus(d, 46, 47, 56):
          return False
  
      roll = roll50(msg)
      if (roll is not None) and abs(roll) > 60:
          return False
  
      gs = gs50(msg)
      if gs is not None and gs > 600:
          return False
  
      tas = tas50(msg)
      if tas is not None and tas > 500:
          return False
  
      if (gs is not None) and (tas is not None) and (abs(tas - gs) > 200):
          return False
  
      return True
docs: Check if a message is likely to be BDS code 5,0
      (Track and turn report)
  
      Args:
          msg (String): 28 bytes hexadecimal message string
  
      Returns:
          bool: True or False