We can set up our navigation displays to depict a final course for the runway, and we can program a glideslope in the FMC (flight-management computer
) to aid in our descent.
In January 2017, pilots of a 737 flying out of Costa Rica lost all of their map displays and the flight-management computers
on both sides of the plane "during a critical phase of flight in mountainous terrain," according to the crew's ASRS report.
Cellphones continue to raise safety concerns for FAA The Federal Aviation Administration continues to believe that electronic devices may pose a risk to flight-management computers
, auto-pilots, radios and display screens in cockpits.