* Half of euro zone corporate profits coming from abroad
* Recent drop in euro to translate into 3-6 pct rise in earnings
* 10 cents move in euro: 1 bln euro swing in Airbus's op profits
* Airbus, Sanofi, Luxottica seen among big winners
* G4 currencies performance: link.reuters.com/wew52w
PARIS/LONDON, Sept 5 (Reuters) - The recent sharp slide in the euro currency promises some much-needed breathing space for European companies, reviving hopes for a rebound in due course in corporate profits in the region.
After proving a major headwind for exporters in the first part of the year, the euro's 8 percent drop against the U.S. dollar and 5 percent drop against a basket of major currencies should give a boost of 3 to 6 percent to corporate earnings, analysts and fund managers predict.
Industrial and pharmaceutical groups which derive the bulk of their revenues from outside the euro zone, such as Siemens and Sanofi, will get the biggest boost, but the positive impact should also spread beyond the global firms if the ECB's monetary easing measures stimulate economic growth.
The euro hit a 14-month low on Thursday of $1.2920 against the dollar - down nearly 8 percent from the $1.40 level last May - after the European Central Bank cut interest rates to new record lows and launched an asset purchase programme to ward off deflation.
"Roughly speaking, about 50 percent of euro zone earnings are coming from outside the region, which means that the retreat in the euro is a major factor for earnings in Europe," said Romain Boscher, global head of equities management at Amundi, which has 821 billion euros ($1.08 trillion) under management.
"The drop will take six to 12 months to become visible in corporate results, so we should start to see positive surprises in earnings at the end of the year and early 2015."
According to Boscher a drop of 10 percent in the euro trade-weighted index year-on-year translates into a rise of about 8 percent in corporate profits in the euro zone.
For companies in sectors such as aerospace like Airbus , Safran, Zodiac and Thales which have a big chunk of their sales in dollars while their cost base is mostly in euros the boost will be significant.
For Airbus, one of Europe's most dollar-sensitive companies, a 10 cents move in the euro against the dollar translates into a 1 billion-euro swing in profits at the operating level.
Other companies with a strong exposure to the U.S. market should also be big winners. Italy's Luxottica, the maker of Ray-Ban and Oakley sunglasses, derives about 50 percent of its sales from the United States, advertising group Publicis about 43 percent, telecoms equipment maker Alcatel-Lucent 42 percent and Sanofi nearly a third of its sales, according to data from MSCI.
Giampaolo Trasi, head of equity and credit research at Intesa Sanpaolo, said the more favourable exchange rate should start lifting earnings in the fourth quarter.
"That's assuming it will remain at current levels until the end of the year. In the fourth quarter of last year the exchange rate moved approximately between $1.35 and $1.38."
Beyond the industrials and pharmaceutical sectors, Trasi also sees luxury goods producers among the biggest winners of the weakening euro.
Louis Vuitton owner LVMH gets about three quarters of its revenue from outside Europe, with a strong exposure to the U.S., Japanese and Chinese markets.
G4 currencies performance:
NO TAILWIND YET
The impact of a lower currency will also go beyond the automatic effect on repatriated sales revenue, analysts and fund managers said.
"Mechanically, a drop of 10 percent in the currency represents a rise of 0.2-0.3 percentage points in the euro zone GDP," said Jean-Paul Betbeze, economic advisor at Deloitte, who sees the euro slipping further in the coming months given the opposing trajectories of the monetary policies of the U.S. Federal Reserve and the ECB.
However, a number of strategists said the currency would need to drop further to really drive a broad-based earnings renaissance in Europe.
Overall, STOXX Europe 600 index firms have posted a 10 percent rise in second-quarter profits, rebounding after two years of contraction, although revenues dipped during the quarter, in part due to the rising euro.
"The strong euro penalised European companies during much of 2013 and the first half of 2014, particularly the exporters," said Mathieu L'Hoir, strategist at AXA Investment Managers, which has 582 billion euros ($779.41 billion) in assets under management.
He estimates a fall of 1 percent in the euro on a trade-weighted basis represents on average a positive impact of about 0.4 percentage points in earnings growth for euro zone companies.
"The euro is not a headwind anymore, but it hasn't fallen to the point of becoming a tailwind yet," L'Hoir said. (Additional reporting by Vikram Subhedar; Editing by Greg Mahlich)