The type of fleet to be acquired by both the carriers could also complicate the disinvestment process as the aircraft type may not be compatible with that of the potential strategic partner, they said.
However, members of the Parliamentary consultative committee on civil aviation have favoured the purchase option than leasing. Their concerns were voiced at a meeting here two days ago.
The sources claimed that several once-profitable airlines had got into cash flow problems, with some of them even turning insolvent, due to the commitments on fleet purchase.
They quoted the examples of Lufthansa, Japan Airlines and British Airways, which reported huge losses in the early 1990s due to commitments to the Boeing 747-400.