Stock in Jet Airways slipped nearly 8 per cent on the Bombay Stock Exchange (BSE) on Monday, after sources reported that Etihad Airways expressed concerns about the safety of its investment in the Indian carrier.

Sources said that Etihad expressed concerns to the government that its investment in Jet airways might meet a fate similar to UAE-based telecom firm Etisalat, which lost more than Rs 3,000 crore in the 2G fiasco. According to the anonymous sources, the Abu Dhabi-based carrier has plans to revise the terms of the deal to acquire a stake in Jet Airways.

Reports also cited Etihad Chairman Sheikh Hamed bin Zayed Al Nahayan saying that it would be too soon to announce a final deal between the two airlines.

Following the reports, stock in Jet slipped more than 7.7 per cent to close at Rs 570.75 a share on the BSE.

Some aviation analysts are of the view that one of the reasons behind the delay in the signing of the deal is due to Etihad's interest in getting 50 per cent representation in Jet Airways' board.

Meanwhile, a media report quoted Commerce & Industry Minister Anand Sharma, as saying, "I am given to understand that both the airlines are in negotiations and they are keen to build a partnership."

If the Abu Dhabi carrier and Jet Airways sign a deal, then it would be the first since India permitted foreign direct investment (FDI) of up to 49 per cent in domestic airlines.