Following the diversion of yesterday’s BA253 London Heathrow – Nassau sector to St Johns, British Airways Boeing 777-200ERĀ G-YMMA positioned London Heathrow – St Johns as BA9154 in order to take over the diverted service routing St Johns – Nassau – Grand Cayman using BA253 as its callsign. The aircraft then operated yesterday’s delayed BA252 Grand Cayman – Nassau – London Heathrow.