A compare the level of L2 proficiency of pilots to that of native language speakers.
B discuss the consequences of miscommunication between air traffic controllers and pilots.
C comment on the effects of high cognitive overload on air traffic professionals who are native speakers of English.
D investigate accentedness, comprehensibility and fluency in L2 controllers and pilots communicating among themselves.
E report on the effects of L2 proficiency and workload on speech production and retention of information in pilot-controller interaction.