News Former NTSB chief: Hundreds of Boeing jets should be grounded in wake of Ethiopia crash March 11, 2019March 11, 2019 John Bacon and Jorge L. Ortiz, USA TODAY Comments Off on Former NTSB chief: Hundreds of Boeing jets should be grounded in wake of Ethiopia crash More than a dozen airlines grounded some of Boeing's newest jets, the Max 8, as investigators probed an Ethiopian Airlines crash that killed 157.