FYI - IFR GPS users

Wow!! Does this seem fishy to anyone else? Why only Garmins? Conspiracy?

BTW, this does only apply to GA right? I mean all the airliners out there with GPS recievers on the FMS can still fly IFR right? I'd hate to think that going into the CRJ with a Collins 4200 is a step down from the G430 I was using in the Seminole.

I'm not flying an airliner, but the list actually includes many models of FMS's, including one we have installed in one of our Citations! Fortunately, it appears it only limits us from using the FMS in lieu of ADF/DME, and we have both of those installed. From what I've read on this, someone's working to get this corrected as it only arose from the way the AC is written, not actual lack of capability of the units.
 
From today's AvWeb newsletter:

AEA, FAA Say GPS Units OK For IFR

Recent reports raising concerns about the FAA's approval -- or lack of approval -- of many GPS units for instrument flight have raised questions that still are being sorted out. The Aircraft Electronics Association says the confusion, arising from recently issued FAA Advisory Circular 90-100A, stems from the FAA's deletion of a paragraph in an update of the Aeronautical Information Manual (AIM). The AEA said in a statement on Wednesday that FAA officials had told them "this oversight should be corrected in the next 10 days." Alison Duquette, a spokeswoman for the FAA, told AVweb on Wednesday, "The FAA is working with the manufacturing community and AOPA to resolve the issues. The bottom line is that the previous allowances still apply, so the operators can still fly using whatever GPS system they have." According to the AEA, the basic criteria for VFR and IFR use of GPS as a supplemental means of navigation as described in the AIM is unchanged. "The Association is disappointed with the Agency's communications on this issue," the AEA said, but added that it was pleased with the FAA's response to help to clarify the situation, and commended AOPA's Randy Kenegy for bringing the issue to light.
 
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