Ian,
From the Monarch website dated 31/8
As you may have seen in press articles and in our advertising, Monarch is expanding quickly this year to offer a greater range of flights for you to choose from.
While we are introducing new services, we are temporarily using aircraft operated by other airlines. One of the regulations we have to meet in these circumstances is that the aircraft are operated using these airlines’ own pilots and crew – in airline industry terms this is called ‘wet leasing’.
Wet leasing aircraft is common practise in the airline industry, particularly when an airline needs to obtain aircraft very quickly and on a short-term basis. Wet leases are often used to introduce new routes or supplement an existing fleet during peak season, such as we are doing at the moment.
Please be assured that safety is our Monarch’s first priority and we would never compromise upon this. Monarch has carefully selected four airlines to operate this contract and the requirements routinely stipulated by the UK Civil Aviation Authority have been met.
So looks like one of them
Alan
