A British Airways Boeing B747 jumbo is a mighty plane. British Airways claims to be the world's largest operator of B747 jumbos. They have 34 of B747 version 400 planes in use. The plane can take up to 345 passengers in four classes.
Picture from London Heathrow 20.6.2019 by Johanna Björkroth.

It was always a question mark for myself how come British Airways is operating several routes within the Nordic countries and also within Germany with quite small aircraft? This is one example. This is OY-NCU landing at Oslo Gardermoen airport. OY-NCU is a Dornier Do-328 version 300 jet which according to flightradar has lately been pendeling especially between Billund (DK), Friedrichshafen (DE), Düsseldorf (DE) and Oslo (NO). It is just in the colours of British Airways, but the real operator is Sun Air.

Dornier Do-328 OY-NCU was delivered as a new plane to Skyway Airlines of USA in 1999. It came to Sun Air Scandinavia of Denmark in May 2013.
Picture from Oslo Gardermoen airport 13.8.2019 by Ilkka Siissalo.

This is not quite the smallest scheduled flight aeroplane I have been on, but close. This OY-SVB is a Sun Air BAe Jetstream 31 which at the time was operating the route between Aalborg in Denmark and Oslo in Norway. It is probably also the smallest aircraft that I have ever seen in the colours of British Airways. The machine was originally delivered to J-Air in 1997 and it came to Sun Air of Scandinavia in 2003.
Picture from Aalborg airport in Denmark 30.8.2016 by Ilkka Siissalo.

The same BAe Jetstream 31 seen from its front the following day as we were boarding it.
Picture from Aalborg airport in Denmark 1.9.2016 by Ilkka Siissalo.

Frontal view of the same BAe Jetstream 31.
Picture from Aalborg airport in Denmark 1.9.2016 by Ilkka Siissalo.

Passengers climbing onboard. The tall man climbing the stairs is the CIO of Oslo University.
Picture from Aalborg airport in Denmark 1.9.2016 by Ilkka Siissalo.

Inside view of the small BAe Jetstream 31.
Picture from Aalborg airport in Denmark 1.9.2016 by Ilkka Siissalo.

The flight from Aalborg to Oslo has ended and it's time to fill up the tanks. Fueling the small machine is not quite as automatic as with the big planes.
Picture from Oslo Gardermoen airport in Norway 1.9.2016 by Ilkka Siissalo.