500+ mph with the Garmin Nuvi 265WT GPS during flight

We took the Garmin Nuvi 265WT GPS from take off to cruising altitude and speed in a Cessna 750. The tracking worked great and we saw the unit go up to 625 mph although the video only showed around 500 mph.

It was fun comparing the Nuvi to the in-flight map because we got to see our flight moving over roads!

However, while the speed were comparable, we noticed that after above 10,000 feet, the altitude didn't match the in-flight map by as much as several thousand feet (at 25,000 ft). We assume the in-flight system is more accurate.

Here's another one but using the android based HTC Thunderbolt at around 45,000 ft in altitude:

http://www.youtube.com/watch?v=rMiRbHgD4bM

Finally, there's the "40,000 ft altitude ..." video where we take the same GPS but recorded its usage on a commercial flight.

http://www.youtube.com/watch?v=Kt1WJbdpmss

Category:

Science & Technology

Tags:

• garmin
• nuvi
• 265wt
• 265
• wt
• tom
• tomtom
• magellan
• gps
• global
• position
• positioning
• system
• handheld
• map
• mapping
• navigation
• satellite
• longitude
• latitude
• cessna
• 750
• cessna750
• jet
• mph
• miles
• per
• hour
• speed
• plane
• nav
• htc
• thunderbolt
• android

[mmc642]

Cool Video, I've always wanted to do this with my car GPS, just never have. The reason your altitude varied after about 10,000 feet is because traditional aircraft altimeters work off air pressure. Since air pressure changes over distances, altimeters are set to a standard atmospheric pressure setting of 29.92"hg while in Class A airspace.

[amiga2000]

@mmc642 Nice explanation.  Thanks! Are you a pilot yourself?

[free2rhyme29100]

I DIDNT KNOW YOU CAN HAVE THOSE GPS ON A PLANE...IS THAT SAFE TO REALLY USE WHILE ON A FLIGHT????

[amiga2000]

@free2rhyme29100 So GPS receivers are called receivers because they don't transmit. I'm sure there are a gazillion articles out there on the intertubes but GPS receivers just get time information from known points in space (figuratively and actually).

[ChaseThatTornado67]

awesome speed bro! imagine the 500+ winds and the bone chilling (-40F) degree temps #LOL

[amiga2000]

@ChaseThatTornado67 Actually that would be a really great video to see... someone doing this with the nuvi OUTSIDE of the plane. If you find that video, post the link here man!

[AndrewMC6]

@free2rhyme29100 Calm yourself, the pilots are using GPS, already proving that there is no harm done by GPS.

[Carterofmars]

Song by?

[nrhoden11]

1:42 the great speed up :D

[nrhoden11]

imagine if u went 502 mph on the ground O_o

[JustinCase380]

If you want to estimate your arrival time remember to put it in pedestrian mode otherwise the Garmin wants to put you on a road.

[helobelow]

Cool. I take my Garmin in the heli with me and I can only remember a GS of about 145 with a tailwind once...lol!

[ElPajaroMexicano]

cool i wish my car would fly when id go relatively 150+ mph lol!!!!

[malanga13]

man that is cool, all my life i've wanted to do that with my car gps also like many others here! I couldn't get my eyes off of it!

[Pikachu4170]

Id Soneone Asks What Is This Song, Its 02-Utilization by Chris Howard