Stan Prevost wrote:
"Sam Spade" wrote in message
...

The 530W also has a nice feature, not present in th 530. ......snip...
Positive course gudiance in holds and procedure turns using highly
accurate roll-steering is great, too. (For FD or autopilot, those too
need to have roll steering to get the most out of these curved flight
paths.)


According to the GNS430W manual, the unit does not provide positive course
guidance in holds except on the inbound leg, which is not a change from the
430, and does not provide positive course guidance on a PT except on the
outbound and inbound portions (not during the reversal itself), which is
also not a change from the 430.

Regarding roll steering, it says "For roll steering autopilots: roll
steering is terminated when approach mode is selected on the autopilot and
is available once the missed approach is initiated." I don't really
understand this statement.

I didn't read the 530W manual. Is it different?



I got the straight scoop from a Garmin soothsayer. First, with a Garmin
autopilot there would not be such a limitation. But, this manual is
written on the presumption the aircraft has Brand K or Brand S
autopilots that do have roll steering. But, those brands have to switch
to CDI steering to fly an ILS so roll steering is not allowed in the
final segment, even though it would be okay with RNAV.