INS Qs
1. At the second stage of integration, E/W speed is converted to E/W distance gone. To convert this departure into change of longitude, it has to be:
a. Multiplied by the Secant of the latitude
b. Divided by the tangent of the latitude
2. The amber ALERT light on an INS Control and display unit:
a. illuminates steadily for 2 minutes before reaching the next waypoint
b. start flashing 2 minutes before reaching the next waypoint and goes out at 30 secs to run.