Sorry, I'm busy at the moment 챦쨩쩔t-ject 60 For close to a decade, the NTSB has been calling for the FAA to study whether it should require airlines and jet manufacturers to install cockpit systems to warn pilots when they are going too slowly, even before they are in immediate danger of stalling. After the Turkish Airlines crash in 2009, Boeing began installing a spoken low-airspeed warning system in 737 airplanes. The 777 is equipped with a low-speed warning tone, but it does not feature a spoken alert. By the time a stall warning known as a "stick shaker" activated on the Asiana flight, the pilots were unable to abort the landing.