On Friday, India`s Jet Airways Ltd has grounded four aircraft after failing to make payments to lessors, in a sign that leasing firms are losing patience with the heavily indebted carrier. The airline, India`s second-largest by market share, did not name the leasing firms involved, nor clarify whether the groundings were voluntary or forced. Jet Airways has a large fleet of mainly Boeing Co 737 jets which it sources from over 20 lessors. Late on Thursday, Jet Airways said in a statement to the Bombay Stock Exchange "The company is making all efforts to minimise disruption to its network due to the above and is proactively informing and re-accommodating its affected guests,". Jet Airways could not be reached for further comment outside business hours. Saddled with debt of about $1.14 billion, Jet Airways has been hit by price competition, rupee depreciation and high oil costs. The full-service airline, which controls a sixth of India`s booming aviation market, owes money to banks, vendors and lessors. also read Non Performing Assets (NPAs) or bad loans of public sector banks declined by more than Rs 31,000 crore However, Lessors to Jet Airways include AerCap Holdings NV, BOC Aviation Ltd, Avolon, GE Capital Aviation Services, Aircastle Ltd, DAE Aerospace, SBMC Aviation Capital and Jackson Square, according to past announcements and Indian registration documents. And Reuters last month exclusively reported that lessors were considering taking back planes after a meeting with the airline that one person familiar with the matter described as an ill-tempered showdown. Last week, Jet Airways said it would seek shareholder approval at a Feb. 21 meeting to convert existing debt into equity and allow its lenders to nominate directors to its board, in an effort to resolve its financial issues. The situation has since worsened, the person told Reuters on Thursday.Jet had agreed to most conditions set by shareholder Etihad Airways for offering a lifeline. The deal would result in Jet Airways` founder and chairman Naresh Goyal reducing his stake to 22 percent from 51 percent and stepping down from the board. also read BSE show an upward trend and recorded at 424 pts, NSE slumped 125.80 pts.