Before revision: The deflection of the needle is proportional to the course deviation, but sensitivity and deflection vary depending on the system being used: When used with a GPS it shows actual distance left or right of the programmed courseline.
After revision: , or other RNAV equipment,The deflection of the needle is proportional to the course deviation, but sensitivity and deflection vary depending on the system being used: When used with a GPS it shows actual distance left or right of the programmed courseline.