Update on CAI flight recorder repairs from CNi (GPS Date problems)

My 302 was purchased new in 2008 and has the black case. I fly often which may helped the GPS battery to stay charged longer, not sure.
I just checked the NMEA sentence on the ground (no IGC log since I didn't fly or drive with it) and the NMEA sentence $GPRMC has the string 141214 after the coordinates. Today was 12/14/2014 and from what I gather this confirms my date is still correct.

Ramy

You should see that same date string at the beginning of the B records,
as well. But I guess those would only happen if you were moving?


On 12/14/2014 8:13 PM, Ramy wrote:
My 302 was purchased new in 2008 and has the black case. I fly often which may helped the GPS battery to stay charged longer, not sure.
I just checked the NMEA sentence on the ground (no IGC log since I didn't fly or drive with it) and the NMEA sentence $GPRMC has the string 141214 after the coordinates. Today was 12/14/2014 and from what I gather this confirms my date is still correct.

Ramy

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Dan Marotta

On Monday, December 15, 2014 9:12:13 AM UTC-6, Dan Marotta wrote:
You should see that same date string at the beginning of the B
records, as well.* But I guess those would only happen if you were
moving?






On 12/14/2014 8:13 PM, Ramy wrote:



My 302 was purchased new in 2008 and has the black case. I fly often which may helped the GPS battery to stay charged longer, not sure.
I just checked the NMEA sentence on the ground (no IGC log since I didn't fly or drive with it) and the NMEA sentence $GPRMC has the string 141214 after the coordinates. Today was 12/14/2014 and from what I gather this confirms my date is still correct.

Ramy





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Dan Marotta

My latest 302 file is from October and the date is fine. It shows this line in the record:

HFGPS:GARMIN,LVS-25,12,18000

Does anyone know if this is one of the affected GPS engines?
With the 302 installed in my glider (which sits in my basement) I don't have a good way to test the unit.
Herb

On Mon, 15 Dec 2014 07:53:51 -0800, herbkilian wrote:

On Monday, December 15, 2014 9:12:13 AM UTC-6, Dan Marotta wrote:
You should see that same date string at the beginning of the B
records, as well.Â* But I guess those would only happen if you were
moving?






On 12/14/2014 8:13 PM, Ramy wrote:



My 302 was purchased new in 2008 and has the black case. I fly
often which may helped the GPS battery to stay charged longer,
not sure.
I just checked the NMEA sentence on the ground (no IGC log since I
didn't fly or drive with it) and the NMEA sentence $GPRMC has the
string 141214 after the coordinates. Today was 12/14/2014 and from what
I gather this confirms my date is still correct.

Ramy





--

Dan Marotta

My latest 302 file is from October and the date is fine. It shows this
line in the record:

HFGPS:GARMIN,LVS-25,12,18000

Does anyone know if this is one of the affected GPS engines?
With the 302 installed in my glider (which sits in my basement) I don't
have a good way to test the unit.
Herb

Yes, the 25 is the unit in question. However, that's likely just
hardcoded in the Cambridge firmware, so it doesn't mean anything. Even a
unit build in 2010 showed that string, and it almost certainly has the
GPS15 in it.

I was able to read the time from my unit before and after satellite lock
by looking at a tablet interfaced to the unit. Since the time before
lock had just drifted a bit from real time, I concluded the clock hadn't
lost power and the date almost certainly is still good.

-Dave

Looks like people are looking at different indicators to determine if the date is valid. Can anyone confirm which NMEA sentence holds the year and in what format?

Ramy

On Mon, 15 Dec 2014 22:25:11 -0800, Ramy wrote:

Looks like people are looking at different indicators to determine if
the date is valid. Can anyone confirm which NMEA sentence holds the year
and in what format?

Its in two of the header records: the H record starting with HFDTE and
the first C record. In both cases the date is held as six digits: DDMMYY

You can find full details he

http://www.fai.org/component/phocado.../category/855-
technicalspecifications?download=8455:igc-fr-spec-with-al3-2014-6-30a



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martin@ | Martin Gregorie
gregorie. | Essex, UK
org |