Embraer Reports GPS Instability Affecting E2 Jets; Honeywell Aerospace Investigates Global Reception Issue

Embraer said on Tuesday it has been notified of reports of GPS system instability affecting certain aircraft types, including its E2 family. The Brazilian planemaker said it was closely monitoring the situation in coordination with operators and the equipment manufacturer, while providing technical support to customers.

Embraer stated there is no impact on flight safety, adding that the global E2 fleet is equipped with navigation systems and procedures that allow the aircraft to operate even under conditions of GPS system instability. Honeywell Aerospace, whose equipment is fitted on the aircraft, is investigating the reception issue.

Reports of GPS instability tied to a single avionics supplier tend to surface across several aircraft programs simultaneously, since manufacturers like Honeywell equip multiple airframes with the same navigation hardware. That is why Embraer frames this as a coordination exercise with the equipment maker and operators rather than an isolated fleet problem.

Modern commercial and business jets are built with layered navigation redundancy precisely so that a GPS reception issue does not translate into an operational stoppage — inertial reference systems and other procedures are designed to keep aircraft flying safely while a signal problem is diagnosed. Embraer's statement that the E2 fleet can operate under such conditions reflects that design principle rather than a one-off fix.

What happens next depends on what Honeywell's investigation into the reception issue finds and whether it identifies a hardware, software or external signal cause. Embraer's continued coordination with operators will show whether the instability is contained to reporting anomalies or requires a broader technical response.