Boeing's top-selling aircraft has been taken out of service worldwide since an Ethiopian Airlines 737 MAX crashed in March, five months after a Lion Air 737 MAX plunged into the sea off Indonesia. A total of 346 people died in the two disasters.
Investigators looking to uncover the causes must answer one of the biggest questions: Was the plane's software to blame?
Boeing produces 52 aircraft per month and its newest version, the MAX, represents the lion's share of production, although Boeing declined to break out exact numbers
Currently, Jet Airways and SpiceJet fly Boeing 737 MAX planes in India. Together, there are at least six such aircraft with the two carriers