A redundancy process is under way as passenger numbers plummet during the coronavirus pandemic.
British Airline Pilots Association says decision to shut Edinburgh CityFlyer base is 'bitterly disappointing'.
Scottish aviation bosses say the 14-day quarantine policy has already cost thousands of jobs.
Frontline NHS staff will be the first to be offered PCR swabs to identify whether they have the virus.
Construction of the £207m line to Newhaven is scheduled to last until summer 2021.
It is hoped Pocketalk will enable staff to have better communication with international passengers.