From the CVR data , 16 seconds before the crash , the Captain called for a go - around , gear up and flaps , a warning horn then sounded followed by a ' too low gear ' aural sound .
From the CVR data , 16 seconds before the crash , the Captain called for a go - around , gear up and flaps before the crash . 
 A warning horn then sounded followed by a ' too low gear ' aural sound .