The EU Commission prohibits a merger between two US companies in the markets for aero-engines, avionics and other aircraft components and systems (GE / Honeywell)

"General Electric/Honeywell — An insight into the Commission’s investigation and decision"* Owing to the benefits of engine commonality, incumbency of engine suppliers is better assessed in terms of the installed base of engines on aircraft that are still in production. Nevertheless, to the extent that the revenue streams that engine suppliers can use to finance future engine developments, and thus future competition in the market, derive from the engines in service today, the overall installed base of engines was assessed (i.e., including engines on aircraft both still and no longer in production). The Commission also calculated market shares on the basis of the number of platform competitions won be each engine manufacturer. Large Commercial Aircraft Engines The three major engine