How can noise levels be reduced during engine runs?
A. By installing aircraft engine noise suppression devices
B. By shutting down the APU after engine start
C. By running in selected open aircraft run-up areas
D. By running engines only during daytime hours – from dawn to dusk
Answer:A
How can noise levels be reduced during engine runs?
A. By installing aircraft engine noise suppression devices B. By shutting down the APU after engine start C. By running in selected open aircraft run-up areas D. By running engines only during daytime hours – from dawn to dusk