IFR Handheld GPS??
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IFR Handheld GPS??
Is there any such thing as a handheld IFR GPS? Where can you get them?
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fougapilot
- Rank 7
- Posts: 669
- Joined: Fri Oct 08, 2004 4:49 am
Beech,
An IFR approved GPS is not approved only because of its capacity as a GPS, but also because the way it is installd in an airplane. Most instalation requirements actualy have nothing to do with the GPS itself, but rather with how shielded it is from interference from outside sources (Alternators, transponders, VHF radios, DME...).
Since a handheld is not installed, it cannot meet the instalation requirements of TSO129, so it cannot be IFR certified.
Perhaps in the future, GPS manufacturer will come up with such units, but not for now.
Cheers,
F
An IFR approved GPS is not approved only because of its capacity as a GPS, but also because the way it is installd in an airplane. Most instalation requirements actualy have nothing to do with the GPS itself, but rather with how shielded it is from interference from outside sources (Alternators, transponders, VHF radios, DME...).
Since a handheld is not installed, it cannot meet the instalation requirements of TSO129, so it cannot be IFR certified.
Perhaps in the future, GPS manufacturer will come up with such units, but not for now.
Cheers,
F
I'm pretty sure it also has to do with power supply requirements. There was an incident a few years back where a certain company was filling gps equipped on their IFR flight plans, and when a controller proceeded to ask their distance back from a fix, the response from the pilot was "uh, actually, our GPS just ran out of batteries".
The GPS handhelds were not certified, and I'm pretty sure they can't be due to this exact situation (unless they are somehow wired into the a/c power or something).
The GPS handhelds were not certified, and I'm pretty sure they can't be due to this exact situation (unless they are somehow wired into the a/c power or something).
Refer to:
http://www.tc.gc.ca/CivilAviation/certi ... 51-003.htm
http://www.tc.gc.ca/CivilAviation/certi ... 23-008.htm
http://www.airweb.faa.gov/Regulatory_an ... 0-138A.pdf
Generally speaking, a portable GPS can’t meet the requirements for IFR approval for many reasons. Some of which have already been discussed.
One of the major issues is the display of deviation/steering information. It should be displayed in an area where a minimum of head movement is required to do an instrument scan. For approach operations, this pretty much needs to be where the principal CDI or HSI is.
http://www.tc.gc.ca/CivilAviation/certi ... 51-003.htm
http://www.tc.gc.ca/CivilAviation/certi ... 23-008.htm
http://www.airweb.faa.gov/Regulatory_an ... 0-138A.pdf
Generally speaking, a portable GPS can’t meet the requirements for IFR approval for many reasons. Some of which have already been discussed.
One of the major issues is the display of deviation/steering information. It should be displayed in an area where a minimum of head movement is required to do an instrument scan. For approach operations, this pretty much needs to be where the principal CDI or HSI is.
