Yesterday morning one of the remaining three operational Trislanders was undergoing scheduled maintenance and both of the others went 'tech'. Aurigny had to charter an aircraft to fly an engineer to Alderney to fix one.
The delays and cancellations meant medical appointments were missed and passengers were stranded in Southampton for up to eight and a half hours.
Francis Simonet, chairman of the Policy and Finance Committee, said the politicians were prepared to take the matter up with the Ministry of Justice if the situation did not improve.
Mr Simonet said: 'People have been left stranded, yet again. Several Alderney patients have been denied treatment due to Aurigny's obvious inability to provide the most basic service. It is pointless to raise this any more with the airline – we will be taking it up with the chief minister and other members of the Policy Council in Guernsey to resolve these problems with Aurigny.'