Marciano_1

I clearly remember reading 20m/sec vertical descending in my screen versus 0.8m/sec in same situations near landing, last flight. How could that be explained?

Here it is my last flight landing report from gps from BaseCamp. Look at speed and elevation (5th and 6th column) Here's an old report also landing on the same airport Same last flight half an hour before Here's the plot of the recent flight And here's the plot of the old one

I did that but I had to close it immediately because of women yelling and screaming because of their hairstyle

The strange thing is I've travelled that route several times and I always have had real data like 60 feet/sec vertical speed descending instead of no more than 2 ft/sec like last two times. Big planes fly near 30,000 ft altitude. My 450 reaches that height but much later than real live. Same as when the plane is landed, altitude takes a long while to display real data. That's what Garmin's support answered: The calibrated altitude maintains its accuracy as long as there are no significant changes in air pressure from certain outside forces. Changes in weather are the most significant cause for changes in air pressure, but change in location can also affect the accuracy of the sensor as air pressure can vary from location to location. When experiencing a change in location or weather consider recalibrating the sensor with the known elevation or correct pressure for best accuracy; refer to owner's manual for instructions on calibrating the altimeter. Calibrating the sensor periodically when experiencing changes in air pressure will ensure the highest level of accuracy. The current software version of the Oregon 450 is 6.60. If your device is not up to date, you can update the software with the WebUpdater program: http://www8.garmin.com/support/collection.jsp?product=999-99999-27 You might also try a master reset to address the problem: To perform the master reset: Power device off Press and hold a finger on upper-left corner of display Power device on while continuing to press corner of display Release power button once Oregon powers on Touch 'Yes' on Do you really want to erase all user data? message The device should now be reset to default factory settings, all user data should be removed, and the device should function as expected. Next flight I'll post what happpened after those instructions. Thank you all

I have it for around 4 years. Traveling by plane I use to check altitude variations: altitude and vertical speed It was good compairing to airplane displays info. Now I see slow data variations compairing to real values. If the plane is at 30000ft the gps displays 8000ft and ascending slowly. Same is while descending. Vertical speed also is wrong. I remember 60ft/sec variations. Now I only see, in the same situation, 2ft/sec. Real slow variations seem to be ok traveling by car in mountains where variations are not radical. What can I do? Thank you