On 12 March 2014, an Airbus A319 left engine stopped without any apparent cause on approach to Paris CDG. The crew then started the APU which also stopped. The Investigation found that the cause was engine and APU fuel starvation caused by non-identification of a recurring intermittent malfunction in the fuel quantity indicating system because of a combination of factors including crew failure to record fuel status in line with clear instructions and an inadequate maintenance troubleshooting manual. An inadequately-written abnormal crew drill and the crew’s inadequate fuel system knowledge then resulted in the fuel crossfeed valve not being opened.