I was waiting for the flight BA179 to board yesterday, and I noticed a Jet Blue AB taxiing. It had a dome atop the fuselage that I don't recall seeing on other Airbii. Can someone kindly clarify, thanks.
Also as we were taxiing in the 747, I noticed a vapor stream coming out of a small nozzle on the side of the cowling just below the RR logo, and it persisted even after take off. What was that, and was it normal? I haven't seen this before , but this was from a seat all the way back.
Incidentally, the back rows were not bad, especially in turbulence, contrary to popular impression. The wider but gentler displacements (swings) in the rear are preferable to the sharp jerks you get further up the cabin, and there is less engine vibration, IMHO.