when did it take place?
2007
Air India
In 2007, Air India and Indian Airlines were merged under Air India Limited and the airline took delivery of its first Boeing 777 aircraft. 
maharaja is the mascot of which indian organisation Air India's mascot is "the Maharajah" when was it formed? 1932 by whom? J. R. D. Tata what's his full name? Jehangir Ratanji Dadabhoy Tata what was the airline previously called? Tata Airlines when was it nationalised? 1953 was it part of any merger? Air India and Indian Airlines were merged under Air India Limited
wiki:7261890
Air India [SEP] Indian Airlines merger
In 2007, Air India and Indian Airlines were merged under Air India Limited and the airline took delivery of its first Boeing 777 aircraft. The airline was invited to be a part of the Star Alliance in 2007. The combined losses for Air India and Indian Airlines in 2006–07 were and after the merger, it went up to by March 2009. In July 2009, State Bank of India was appointed to prepare a road map for the recovery of the airline. The carrier sold three Airbus A300 and one Boeing 747-300M in March 2009 for $18.75 million to finance the debt.