Rectangular PVC patch styled as a yellow and navy hazard label reading GPS DENIED, inertial only

GPS Denied Patch

A hazard label for the moment the satellites go quiet and the inertial system carries on alone.

Size
90 x 50mm, PVC, hook backing
From
The navigation side of Aeron
Item code
AER-GPS-DENIED-PATCH

Why it's true.

When satellite signals drop out, a navigation system falls back on its inertial sensors and carries on alone. The patch is a hazard label for that moment. PVC, so the stripes stay crisp.