L as Vegas oddsmakers don’t keep track of such things, but if they did Garmin would have been a safe bet to retake the overall number-one ranking in AIN’s 2010 avionics product support survey. After ceding the top spot last year to upstart cabin entertainment equipment maker Flight Display Systems, which dropped to second place overall this time around, Garmin is once again back in first place.

But in an effort aimed at showing how the individual suppliers performed with respect to their closest competitors, we decided to split this year’s survey into two groups: cockpit avionics and cabin electronics. The change put Flight Display Systems in the top spot among cabin equipment suppliers ahead of Rockwell Collins and Honeywell, which finished in second and third places in this group. The switch also created dual rankings for Honeywell and Collins, which are major suppliers of both cockpit and cabin products.