(Adds details on proposal, background and shares)
Feb 20 (Reuters) - Shares (Berlin: DI6.BE - news) in Flybe Group Plc (LSE: FLYB.L - news) sky-rocketed after it said it had received an alternative financing proposal from a new consortium, challenging a Richard Branson-backed group that agreed to buy out the struggling British regional airliner.
Flybe said the new preliminary financing proposal was from Bateleur Capital, Mesa Air Group Inc with support from Stobart Group former boss Andrew Tinkler.
Flybe said on Wednesday that the proposal was "highly conditional" and it does not believe it could be workable in the time-frame required to enable Flybe to continue to trade.
The stock more than doubled to 2.52 pence at 0817 GMT.
The optional financing proposal, which includes other undisclosed institutional shareholders, could look to inject cash into Flybe and replace the current funding, according to a statement.
Sky News reported http://bit.ly/2GAUjGp on Tuesday that the new consortium had tabled an offer to inject 65 million of new equity into Flybe at a price of about 4.5 pence per share.
Flybe had also been approached by Tinkler earlier this month about a possible alternative financing proposal.
Richard Branson's Virgin Atlantic, Stobart Group and Cyrus Capital (Other OTC: CGHC - news) agreed to buy Flybe, Britain's biggest domestic airline in January, through a joint venture company called Connect Airways for an initial 2.2 million pounds.
The deal was later revised to sell the airline's main trading company Flybe Limited and online operation Flybe.com Ltd to the consortium for 2.8 million pounds without needing shareholder backing.
The consortium, which had won the backing of Flybe's board to buy the airline, had also agreed to pump in as much as 100 million pounds to keep the airline afloat, including a committed credit facility of up to 20 million pounds.
Flybe said on Wednesday it had drawn down the first 15 million pounds of the facility, adding that it continues to regard the arrangements with the consortium as being the only viable option available to the company.
"The arrangements with Connect Airways preserve the interests of Flybe's stakeholders, customers, employees, partners and pension members."
Flybe, which operates routes from about 25 British airports, including domestic connections to London's Heathrow, has said its short-term performance had been hit by higher fuel costs, currency fluctuations and uncertainties from Britain's looming exit from the European Union.
Flybe has also agreed to demands from its largest shareholder to call a general meeting to consider replacing Chairman Simon Laffin following the cut-price sale.
($1 = 0.7664 pounds) (Reporting by Noor Zainab Hussain and Arathy S Nair in Bengaluru; Editing by Bernard Orr)