This thread compelled me to join MooneySpace and share my thoughts. Not to mention, since Allen called out my N# (N202PC), it seemed appropriate to jump into the fray and share my opinion. For me, I went Normally Aspirated purely for economics. My research confirmed a general truism of turbos: you’ll need a top end rebuild at about 1000 hours and it will typically cost more. Beyond burning more fuel, you’ll likely have to lug Oxygen along on your trip to really enjoy all the high flying turbo benefits, lowering your useful load and cabin space. And refilling the bottle costs money too. I went NA Mooney to get what I think is the best balance of speed and economy – 155 Knots true on 9.5 GPH at FL-120 for nearly 6 hours endurance – that’s pretty tough to beat.
Enough stats, let’s talk about the NA version of the “never summer” fly in so you can compare my experience with Allen’s. Normally, I fly a few hundred pounds under gross and have fair performance over the big rocks. But for this trip, I was at gross – the whole family of 3 plus mother-in-law in tow along with all our camping gear and fuel to tabs. I left home base of APA (5800 feet MSL) around 10:30 local and it was already hot – at least 85 degrees. The ground roll was much longer than normal and the climb rate was barely 500 FPM that day. To clear Rollins Pass (the locals call it Corona Pass) you need to be at least FL-125 to clear the rocks. On top of that, the wind coming over the ridge that day was creating a pretty fair downdraft. It was clear that we weren’t going to clear the pass on the merits of the Normally Aspirated engine alone. I turned back from the pass, found a ridge making a nice updraft from the wind, banked to 45 degrees and rode it up like an elevator. We stepped off the updraft at FL-140 and cleared the pass with plenty of air to spare. I explained the procedure to the mother-in-law before the updraft and bank; she thought the ride up was a hoot. Of course, she was also on board with camping out of an airplane
At any rate, I love my Mooney and the only time I wished for a turbo was the 1 or 2 times I wanted to file Instrument over the big rocks and the MEA was FL-160. But, I was able to find a lower altitude route further around the hill. It took longer, but we didn’t have to lug any O2 around and were less likely to pick up ice. So, there you have it – happy shopping!
Bret Lowell