Air Canada MD11

Does anyone have any info on why a daily flight keeps showing up Toronto to Frankfurt operated by Air Canada using an MD11?

flightaware.com/live/flight/ACA1998/history

To my knowledge Air Canada does not operate MD11s

Thanks

Perhaps a regular charter (almost daily YYZ-FRA, every other week for YHZ-VIT) under an ACMI lease?

World Airways leased to Air Canada just for the cargo schedules. airliners.net/open.file/1130489/M/

The Air Canada cargo flights also operate to Asia. Here’s the air cargo schedule