If there is no indication of winds on a GFA, what is the maximum wind speed expected?

When interpreting a GFA (Graphical Flight Agreement) regarding wind indications, the absence of specific wind data suggests a default expectation regarding likely wind speeds. According to standard practices, when winds are not explicitly indicated on a GFA, it is generally understood that the maximum expected wind speed will not exceed 20 knots.

This guideline is established to ensure that pilots can anticipate conditions that may affect their flight without needing exact wind reports. The figure of 20 knots provides a reasonable benchmark for planning purposes, balancing safety considerations with the variability of wind conditions. In practical terms, this allows pilots to prepare for mild turbulence and other phenomena associated with light to moderate winds without being caught off guard by unexpected high wind speeds.

The other options represent higher thresholds that would imply stronger winds, which is inconsistent with the provision of no wind indications on the GFA; thus, they extend beyond the reasonable expectations for conditions where wind data is unspecified.