Mxsmanic wrote:
Andy Hawkins writes:

Dependence? Assuming VFR flight, then all these 'uncertified' gizmos are
just backup for traditional Nav.

The temptation can be strong to use backup as primary.

The temptation can be strong to strangle some ass hole that really ****es
one off but most people are able to resist the temptation to commit a
crime.