Uberlingen: Bashkirian 2937 and DHL 611
Printed page 5. PDF page 7.
instructions of the TCAS manufacturer and the operators were not standardised, incomplete and partially contradictory. � Management and quality assurance of the air navigation service company did not ensure that during the night all open workstations were continuously staffed byOpen final report at PDF page 7BFU AX001-1-2/02: collision near Ueberlingen