The flight conditions were similar to those described in the EASA document, a source at Lion Air said. Boeing declined to comment on the EASA document or its advice to Lion Air, citing the ongoing investigation into the crash. The trim wheel is a relic of the Boeing 737's 1960s origins and does not appear in more modern planes like the 787 and Airbus SE A350. It is not often used, several current and former 737 pilots told Reuters. I have only used manual trim once in the simulator," said a 737 pilot.

Source: Ethiopian News March 29, 2019 05:15 UTC