Unplanned Nav

Question 1

What are the keys to off route navigation in the Texan?

Answer 1

Keep it simple - parallel the route where possible to maintain time

Check for avoids, terrain, weather, etc

Question 2

How can you use a parallelogram to avoid a denied area (weather, SAMs, etc)?

Answer 2

Aim to fly the next planned heading early.

Once area cleared, return to the original hdg to regain route.

Flown as a square box paralleling the route to maintain time.

Use TSD for SA - Check map for avoids

Question 3

If you are behind time, and need to avoid a denied area, what technique can you use?

Answer 3

Corner cut

Question 4

What time penalties are incurred when using a dog leg?

Answer 4

60 deg. cut = The deviation time
45 deg. cut = 1/2 deviation time
30 deg. cut = 1/4 deviation time

Useful avoidance technique if you are early and also need to avoid an area.

E.g. showers ahead, 30 sec early, therefore 45 deg. cut for 1 min to go around and then incur a 30 sec penalty to be back on time.