Originally Posted by
Vgravity
On MMB, MyFlight and Expertflyer they are all showing it as a different plane. Bit of a risk to hope it's a glitch?
Not really. Other than in London, BA only ever does plane in, plane out, unless there are IRROPS. When I've had an equipment change or cancellation on a B2B, it's often the case that there's a delay between one leg changing and the other - perhaps a couple of days. If you're not about to lose out on a sale fare, etc., I'd wait and be very surprised if the two planes weren't aligned by the end of the week.
If I book an RFS can I change outbound flights on the day if it looks sketchy?
No.
The other day in DUS doing a B2B I saw an BA A321 parked at a gate as we taxied in - I wonder if BA have one they fly around Europe to meet increase demand?!
No, they don't. The likelihood is that the A321 would have been there from an earlier flight that was delayed or suffering a technical issue. BA deal with increased demand by raising ticket prices or substituting the plane - if outbound was an A320 and an inbound A321, they'd have an empty A320 to deal with unless demand on the inbound leg were more than double normal levels.