All Boeing 737 MAX 8 aircraft in India will be grounded by 4 pm today, an official of aviation watchdog DGCA has said, according to news agency PTI. Last night, the regulator had announced that the planes would be grounded "immediately" for the sake of passenger safety, three days after an Ethiopian Airlines flight crashed, killing 157 people including four Indians. Since the crash on Sunday, several countries have grounded the Boeing 737 MAX 8 planes, the latest and best-selling variant of the US-based plane-maker.