'Our airplanes are safe,' Boeing on 737 MAX as officials push training

Lion Air confirmed an earlier Reuters report that it was considering cancelling 737 MAX orders after the jetliner plunged into the Java Sea on Oct. 29, killing all 189 people onboard

Aviation authorities in Indonesia and India on Thursday pushed for more simulator training for Boeing Co 737 MAX pilots following the deadly Lion Air crash, while the world's largest planemaker reiterated that its top-selling jetliner was safe.

Boeing Chief Executive Officer Dennis Muilenburg told a CNBC interviewer on Thursday he was "very confident" in the safety of the 737 MAX, the newest version of a jet that has been a fixture of passenger travel for decades.

"We know our airplanes are safe," Muilenburg said. "We have not changed our design philosophy."

Muilenburg's comments came the same day that India's aviation regulator said 737