You need google map API to show the map. The error should fix itself when a flight is completed with an landing rate You will also need the data class for it to work. Didn't have it in your skins version. To change the image, change the url of the header image in the css file.
You need this in your core/common/TouchdownStatsData.clas
public static function get_stats_by_cur_month($howmany) {
$query = "SELECT pilotid, code, flightnum, depicao, arricao, aircraft, landingrate, submitdate FROM `".TABLE_PREFIX."pireps`
WHERE landingrate < '0'
AND MONTH(submitdate)=MONTH(now())
AND YEAR(submitdate)=YEAR(now())
ORDER BY landingrate DESC
LIMIT $howmany";
return DB::get_results($query);
}