Every airplane flight manual/POH has an autopilot supplement
that answers those questions. The autopilot must be
configured to begin and complete the approach early in the
sequence so that it can arm and capture the loc and gs
properly.
Typically you can stay coupled to 50-100 feet AGL on a GS
and to 50 feet below MDA on a non-precision approach.


"Ron Gordon" wrote in message
t...
| I've moved up to a new plane that includes an S-Tec 50
autopilot. It has
| several very capable modes ranging from Wings Leveler,
Track a Heading bug,
| Follow NAV input, Hold a set Altitude, and approach mode
which tracks NAV
| input more closely.
|
| What do the regs say about the permissible use of an
autopilot after the
| enroute portion of a flight that is being conducted under
instrument flight
| rules? To what extent is it permissible to use the
autopilot during an
| approach? For example, after the controller says "radar
vectors for..."
| through DH?
|
| Thanks!
|
|