code: def get_airport_metars_hist(self, iata):
          
          url = AIRPORT_BASE.format(iata) + "/weather"
          return self._fr24.get_airport_metars_hist(url)
docs: Retrieve the metar data for past 72 hours. The data will not be parsed to readable format.
  
          Given the IATA code of an airport, this method returns the metar information for last 72 hours.
  
          Args:
              iata (str): The IATA code for an airport, e.g. HYD
  
          Returns:
              The metar data for the airport
  
          Example::
  
              from pyflightdata import FlightData
              f=FlightData()
              #optional login
              f.login(myemail,mypassword)
              f.get_airport_metars_hist('HYD')