Diurnal Sample Clauses

Diurnal. Magnetic diurnal activity will be monitored at the base station. If the magnetic activity exceeds 20 nT in 2 mins. a flight will not comence until the activity has returned to levels below this (the limit will be reviewed if diurnal is preventing flights more than once a week). Once a flight has started it will not be called back for diurnal activity. The magnetic data will be reviewed and if there is diurnal activity of a frequency that could be confused with the target anomaly frequency and there are anomalies of interest on the effected lines then the section of line effected will be marked for reflight.