This comes after an Ethiopian Airlines plane crashed on Sunday, killing 157 people on board. It was the second fatal accident involving the 737 Max 8 model in less than five months.
US officials say the aircrafts are still safe to fly. However, the US Association of Flight Attendants-CWA union is now calling for the Federal Aviation Administration "to temporarily ground the 737 Max fleet in the US out of an abundance of caution".
India's Ministry of Civil Aviation announced that it would ground the Boeing 737-Max planes "immediately".