ACV, HVN, VJC, SCS: Passenger and cargo traffic volume growth likely to turn negative in 2019. Further to our note on ACV’s AGM we published last Friday, we have run scenarios (based on 2017 actual numbers) of the impact of the shut-down of SGN and HAN runways over four months during off-peak season (we assume August-November) in 2019 on traffic volumes.