The hotly anticipated but much delayed Boeing 787 'Dreamliner' took to the skies for the first time on this day in 2009.
The merger between the two South Korean carriers has hit a further delay after the US DOJ announced it needed more time to review its decision.
Boeing predicts that airlines in the Middle East will double the size of their fleets over the next 20 years.
Boeing has toyed with the idea of a supersonic airliner since the 1960s but its plans remain on the drawing board.
As Etihad Airways (EY) continues its ambitious transformation plans, the airline has reported strong half-year results.
Although expectations were high, the Farnborough Airshow saw a modest number of aircraft orders and announcements from manufacturers.
The pressure on the industry grows amid stakeholder's demands and requirements to reduce carbon emissions.
The letter, which was posted on Lufthansa's (LH) website, carries a very conciliatory tone, ending with a plea for customers to "Stay with us."
While commercial airliners usually have a single design for a particular model, there have been some rare modified versions.