Question: Gol Transportes Aéreos is the second largest Brazilian airline company by market share after the company that merged with LAN Airlines on which date?
Context: Peixoto de Azevedo is a municipality in the state of Mato Grosso, Brazil.  On September 29, 2006, the Brazilian Gol Transportes Aéreos Flight 1907 crashed approximately 200 km east of the city center.  Peixoto de Azevedo was the ancient location of Panará's Indian tribes.  They were expelled by the gold rush in the region.  Now, the Panará's tribes are located in the Indigenous Area Kapoto-Jarinã, created by the Villa-Boas brothers. Transportes Aéreos Nacional was a Brazilian airline founded in 1946.  It was merged into Varig in 1961, when Varig bought the Consórcio Real-Aerovias-Nacional, of which Transportes Aéreos Nacional was one of the partners. Brasil Central Linhas Aéreas was a Brazilian airline founded in 1976 as VOTEC Serviços Aéreos Regionais.  In 1986 its name was changed to Brasil Central Linhas Aéreas and in 1990 to TAM – Transportes Aéreos Meridionais.  In 2000 it was merged into TAM – Transportes Aéreos Regionais, creating TAM Airlines. WebJet Linhas Aéreas S.A. was a low-cost Brazilian airline, based in Rio de Janeiro, which operated from 2005 to 2012.  After a succession of owners, it was acquired in July 2011 by Gol Transportes Aéreos, which eventually decided to close it.  It operated on a low-cost, all-economy class and domestic-only airline business model. Gol Linhas Aéreas Inteligentes S.A ("Gol Intelligent Airlines S.A." also known as VRG Linhas Aéreas S/A) BM&F Bovespa: GOLL3, GOLL4 / is a Brazilian airline based in São Paulo, Brazil.  According to the National Civil Aviation Agency of Brazil (ANAC), between January and December 2015 Gol had 35.9% of the domestic and 13.6% of the international market shares in terms of passengers per kilometer flown, making it the largest low-cost airline in South America and the second largest Brazilian airline company by market share and fleet size, after LATAM Brasil.  Gol competes in Brazil and other South American countries with Chilean LATAM Airlines Group, Brazilian Azul and Colombia-based Avianca Holdings S.A.  It also owns the brand Varig, although now that name refers to what is informally known as the "new" Varig, founded in 2006, not to the extinct "old" Varig airline, founded in 1927. Companhia Itaú de Transportes Aéreos was a Brazilian airline founded in 1947.  In 1955 it was sold to Transportes Aéreos Nacional, which incorporated the airline the following year. Organização Mineira de Transportes Aéreos – OMTA was a Brazilian airline founded in 1946.  In 1950 it was sold to Transportes Aéreos Nacional, which eventually incorporated the airline in 1957. TAS – Transportes Aéreos Salvador Ltda.  was a Brazilian airline founded in 1949.  In 1962 it was sold and incorporated to Sadia Transportes Aéreos. LATAM Airlines Brasil, formerly TAM Airlines (Portuguese: TAM Linhas Aéreas ), is the Brazilian brand of LATAM Airlines Group.  The merger of TAM with LAN Airlines was completed on June 22, 2012.  The company is currently the largest Brazilian airline by market share and fleet size, though it is not Brazil's official flag carrier. TAM Airlines Flight 3054 (JJ3054/TAM3054) was an Airbus A320-233, registration PR-MBK, on a scheduled domestic passenger flight from Porto Alegre to São Paulo, Brazil.  On July 17, 2007, the Airbus A320 overran runway 35L at São Paulo during moderate rain and crashed into a nearby TAM Express warehouse adjacent to a Shell filling station.  All 187 passengers and crew aboard the Airbus A320 died, along with 12 people on the ground.  It surpassed Gol Transportes Aéreos Flight 1907 as the deadliest air disaster in Brazilian territory, and remains the deadliest aviation accident involving an Airbus A320 proper worldwide.  It was also the deadliest accident involving an aircraft of the A320 family at the time, which was later surpassed by the bombing of Metrojet Flight 9268, an A321-231, which crashed in Egypt in October 2015 with 224 fatalities.
Answer: June 22, 2012