Pilatus PC-24 jets need a software update to fix flight director errors

The US aviation regulator proposes a new rule for all Pilatus PC-24 airplanes. This rule requires operators to update the airplane's flight manual with a temporary revision that addresses inaccurate flight director calculations during landing approaches.

This is a small, specific fix for a known software bug in a particular aircraft model. It means pilots will have clearer instructions for handling a specific flight system error. The change is about ensuring existing safety procedures account for a newly identified software issue.