G1000 lost GPS for a bit

Just flew another 2.1 in our local Diamond Star with the G1000. Flew a
friend down to St. Louis area to pick up his daughter. On the way back, I
was putting a chart (the big book from AirChart Systems) down on the floor
between my feet. I bumped the Master/Alt switch. I looked up wondering why
the intercom died & saw 2 dark screens. Poo.
It was a beautiful (hot) day, so no problem. I turn the master back on and
in a few seconds I've got the primary display back. Radios & Nav, but no GPS
signal, and we're right under the shelf of St. Louis class B.
After a quick, but required, refresher on pilotage we cleared the St. Louis
area. We couldn't find a way to recycle just the GPS. I turned off the
Avionics switch for a few seconds. Killed everything but the primary flight
display. When I brought it back on, we had full GPS again.

Pretty weird. Only having about 4.5 hours behind a G1000, I'd hate to have
that happen IFR. Ugh.

Lesson learned? First, don't do that. Second, the quick on/off of the main
master without turning off the Avionics master apparently causing some havoc
in there somewhere. Third, always have charts handy.


--



PP-ASEL, instrument

did you find anything in the G1000 tech manual on this?

"Steven Barnes" wrote in message
. ..
Just flew another 2.1 in our local Diamond Star with the G1000. Flew a
friend down to St. Louis area to pick up his daughter. On the way back, I
was putting a chart (the big book from AirChart Systems) down on the floor
between my feet. I bumped the Master/Alt switch. I looked up wondering why
the intercom died & saw 2 dark screens. Poo.
It was a beautiful (hot) day, so no problem. I turn the master back on and
in a few seconds I've got the primary display back. Radios & Nav, but no
GPS
signal, and we're right under the shelf of St. Louis class B.
After a quick, but required, refresher on pilotage we cleared the St.
Louis
area. We couldn't find a way to recycle just the GPS. I turned off the
Avionics switch for a few seconds. Killed everything but the primary
flight
display. When I brought it back on, we had full GPS again.

Pretty weird. Only having about 4.5 hours behind a G1000, I'd hate to have
that happen IFR. Ugh.

Lesson learned? First, don't do that. Second, the quick on/off of the main
master without turning off the Avionics master apparently causing some
havoc
in there somewhere. Third, always have charts handy.


--



PP-ASEL, instrument

On Sun, 24 Jul 2005 20:42:01 GMT, "Steven Barnes"
wrote:

Just flew another 2.1 in our local Diamond Star with the G1000. Flew a
friend down to St. Louis area to pick up his daughter. On the way back, I
was putting a chart (the big book from AirChart Systems) down on the floor
between my feet. I bumped the Master/Alt switch. I looked up wondering why
the intercom died & saw 2 dark screens. Poo.
It was a beautiful (hot) day, so no problem. I turn the master back on and
in a few seconds I've got the primary display back. Radios & Nav, but no GPS
signal, and we're right under the shelf of St. Louis class B.

GPS can take some time to lock (typically 1minute with modern
receivers). How long did you wait?

"Nathan Young" wrote in message
...
On Sun, 24 Jul 2005 20:42:01 GMT, "Steven Barnes"
wrote:

Just flew another 2.1 in our local Diamond Star with the G1000. Flew a
friend down to St. Louis area to pick up his daughter. On the way back, I
was putting a chart (the big book from AirChart Systems) down on the
floor
between my feet. I bumped the Master/Alt switch. I looked up wondering
why
the intercom died & saw 2 dark screens. Poo.
It was a beautiful (hot) day, so no problem. I turn the master back on
and
in a few seconds I've got the primary display back. Radios & Nav, but no
GPS
signal, and we're right under the shelf of St. Louis class B.

GPS can take some time to lock (typically 1minute with modern
receivers). How long did you wait?

We flew for over 15 minutes that way. Pretty weird. I didn't get a chance to
look it up when we got back.
Tell ya what, though. Even in flight, it only took about 30 seconds (rough
estimate) before I had the AHRS back online with Comm & Nav.