On Fri, 2007-01-12 at 12:19 +0000, Martin Spott wrote:
> Joacim Persson wrote:
> > Bug:
> > AP won't do GS arm (and GS lock) when switching to APR mode from ROL
mode.
> > 
> > Fix:
> > In the last lines of function "apr_arm_from_rol" change:
> > -setprop(Locks, "roll-arm", "gs-arm");
> > +setprop(Locks, "pitch-arm", "gs-arm");
> 
> I've never used the KAP140, could someone please verify if the fix is
> appropriate ?

Good catch Joacim!

I applied this patch to the kap140.nas in the pa24-250 folder.  It
works ... sort of.  By that I mean not as expected.  In order for this
to give the desired result, one must turn the hdg bug to the localizer
heading while the HDG is flashing immediately after the APR button is
pressed.

This agrees with the kap140 manual in that the only documented
instructions for pressing the APR button assume you are in HDG mode.
These instructions state "Select approach mode by depressing the APR
button.  The HDG annunciation will flash for five seconds then
extinguish.  While the HDG annunciation is flashing, move the heading
bug to 058 deg."  That is the LOC heading for their example.

>From the documentation, I don't think we are expected to depress APR
while in ROL mode, only from HDG mode.  But if you move the bug to the
LOC heading while the HDG annunciation is flashing, it works when
entered in ROL mode (i.e. you depress APR while in ROL mode and then put
the hdg bug on the HI to the LOC heading and it works).

Regards,

-- 
Dave Perry 


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