GPS signal loss is a frequent occurrence, caused by external jamming, internal hardware issues (e.g., loose cables, unseated units), or signal shadowing.
Pilots often over-rely on GPS; without robust situational awareness, this can lead to airspace incursions when signals are lost or warning messages are ignored.
To mitigate risks, pilots must check GPS NOTAMs and RAIM pre-flight, monitor GPS status for warnings, practice terrestrial navigation, and be prepared with backup methods.
These pages often contain encouragement to pilots not to become so completely reliant on GPS that its loss constitutes no less than an emergency. GPS, both panel-mount and portable, can fail for external and internal reasons. Read about these GPS-failure events culled from ASRS reports. We hope this article will lead you to get some practice using terrestrial nav.
Jammed Up
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