I had 75 hours (about 55 flights) on my RV-12iS, when I tried starting the engine at KOSH to depart.. no fuel pumps at all. Cycled things a few times, and it magically started working again. Didn't think twice about it -- run-up check was OK so that was my permission to fly .. and I blasted out of there..
At 105 hrs (24 flights later), I travelled to an island (KBID).. where, when I was getting ready to leave, one of the fuel pumps was completely dead and wouldn't come online no matter what I tried. I definitely wasn't going over the water with 1 pump. Luckily I was able to buy a voltmeter at the only mom-and-pop hardware store on the island and was able to hotwire the pump (bypassing the HIC) the following morning. it got me home.
In the hangar, I finally isolated the problem (the molex connector on the HIC module) -- and the general response from Van's was "oh yeah, we know about that, we're working on a fix".. thanks. But after reading though all of my historical G3X logs, I realized that one of the pumps had been going offline intermittently during flights -- I had no idea -- and had I tried flying home on the 1 operating pump, there would have been a REAL chance that it would have gone offline too. Vibration kills that Molex connector. SB-00041 was a quick fix and it essentially had you rebuild the connector and add strain-relief to it; and it was superceded by SB-00058, which replaces the HIC module all together with one that has an 8-pin green terminal block. The 2.5 Hours listed in the Service Bulletin is about right for the job.
So, all that to say that if you haven't performed SB-00058, ground your aircraft until you've done so.
