bmi will start
phasing out the F100s towards the end of 2004.
Depending on how quickly the A319s are introduced, and the amount of expansion undertaken during that timeframe, the F100s will probably be around until the end of the summer 2005 schedule.
The F100s are Heathrow based, the ERJs are operated by bmi regional - a subsidiary based in Aberdeen. The only times you'll find the ERJs at LHR
are on off peak LBA
services which wouldn't otherwise operate.
I believe bmi would have liked to order EMB-190s to be operated by bmi regional to replace the F100s, but pilot contracts prevented them doing that.
There was a scuffle a couple of years back when bmi regional were operating MAN
flights with BAE146s after the demise of Sabena. bmi mainline pilots objected to the operation of an F100-sized aircraft by regional pilots on bmi routes. The route didn't last long due to these issues - when SNBA was formed there was overcapacity, and the route would not have been viable with bmi mainline's cost base. The BAE146s had perviously only operated on behalf of Lufthansa.