Ian Lawrenson, senior vp multinational accounts global, has left BCD Travel "to pursue other business interests."
He is the third senior former TQ3 executive to leave since BCD took over that company in January.
Toby Joseph, chief operating officer and Marc Hildebrand, president and ceo, both left in March. Mr Joseph has since joined Eos Airlines while Mr Hildebrand is working as a consultant for BCD Holding advising on acquisitions.
Mr Lawrenson joined TQ3 five years ago to set up and manage the travel management company's global account management. He also had a central role in setting up TQ3's consulting arm Advito.
He said on his decision to leave: "From a personal point of view, now that my original objectives have been achieved, I have decided to step down to pursue a career and new challenge outside of BCD Travel."
SkyTeam accused on "non-competitive" routes
The European Commission has accused nine members of the SkyTeam alliance of operating routes where there is no "significant competition pressure from other carriers."
In a Statement of Objections to Aeromexico, Air France, Alitalia, Continental Airlines CSA, Delta Air Lines, KLM, Korean Air Lines and Northwest, the EC said its concerns were only for a limited number of routes.
These are routes between the EU and the US, within the EU and on routes between the EU and third countries where SkyTeam carriers had previously competed separately.
An EC statement said SkyTeam co-operation on these routes may have a "negative effect on competition" and therefore might infringe EC rules on restrictive practices.
A statement by SkyTeam said the nine members had received the "so called" Statement of Objections from the EC and would reply in the autumn.
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