There was a call for automated transponders after the 11 September 2001 terrorist attacks ; no changes were made , as aviation experts preferred flexible control , in case of malfunctions or electrical emergencies . In the wake of Flight 370 , the air transport industry was still resistant to the installation of automated transponders , which would likely entail significant costs . Pilots also criticised changes of this kind , insisting on the need to cut power to equipment in the event of a fire . Nonetheless , new types of tamper-proof circuit breakers were being considered
11 September 2001 terrorist attacks
September 11 attacks
Malaysia Airlines Flight 370