Private air-carrier Jet Airways, has posted a net loss of Rs 384.5-crore in Q2 FY 09 as against a net profit of Rs 28.3-crore in the year-ago period.The company's total income in the reporting quarter has, however, increased to Rs 3,258.04-crore from Rs 2,254.22-crore in the year-ago period, the company informed the Bombay Stock Exchange.