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alberchico
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Why Is This Airliner Using A Handheld GPS?

Fri Apr 07, 2006 10:13 pm

http://www.airliners.net/open.file?i...22&prev_id=0433094&next_id=0433092

If this aircraft has advanced avionics, then why does the captain have a handheld GPS ?

This bottom pic shows the advanced avionics of the aircraft
http://www.airliners.net/open.file?i...25&prev_id=0433091&next_id=0433089
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Boeing Nut
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 12:14 am

Maybe just for fun? Or calibrating it against the aircrafts instruments?
I'm not a real aeronautical engineer, I just play one on Airliners.net.
 
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alberchico
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 12:35 am

Quoting Boeing nut (Reply 1):
Or calibrating it against the aircrafts instruments?

Isn't that done on the ground by mechanics ???
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bhxdtw
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 12:56 am

I dont mean to sound like an idiot but wouldnt that affect the aircrafts avionics eqpmnt ??

I mean, if we cant use mobile phones...how can they use GPS
 
SLUAviator
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 12:58 am

Maybe the plane does not have a GPS.
What do I know? I just fly 'em.......
 
afay1
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 1:01 am

It is possible the plane uses GLONASS as well as GPS. Probably the handheld doesn't really affect the plane's avionics systems anyway.
 
bhxdtw
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 1:11 am

Quoting Afay1 (Reply 5):
Probably the handheld doesn't really affect the plane's avionics systems anyway.

So does that mean I could take a GPS aboard and use it ?
 
afay1
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 1:21 am

Could you, yes, should you; no! It probably won't interfere, but who knows if it is somehow shielded incorrectly or interferes through a defect of some kind. It isn't neccesarily that the devices normally would interfere, but they are not subject to the testing and certification of ones meant for aircraft. Many pre-GPS Soviet-era aircraft have ad-hoc GPS systems using handheld devices. Some can even correlate GPS and GLONASS (as an aside, doesn't GLONASS sound like something crude?)
 
MrMcCoy
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RE: Why Is This Airliner Using A Handheld GPS?

Sat Apr 08, 2006 1:33 am

Quoting Afay1 (Reply 7):
Could you, yes, should you; no! It probably won't interfere, but who knows if it is somehow shielded incorrectly or interferes through a defect of some kind. It isn't neccesarily that the devices normally would interfere, but they are not subject to the testing and certification of ones meant for aircraft. Many pre-GPS Soviet-era aircraft have ad-hoc GPS systems using handheld devices. Some can even correlate GPS and GLONASS (as an aside, doesn't GLONASS sound like something crude?)

GPS receivers are passive, and don't send out any signals above and beyond what might be expected from any battery-powered device (eg. cd player, MP3 players, etc.)
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