VFR on top in the Comanche
Posted in Flying on March 28, 2008 by c1jensenI had no plan to fly today, but work took care of that for me when our General Manager walked in my office at about 9:30am to ask if I could run to Casey, IL to meet with one of our clients. Yup! I can do that!
The plan was to take the older Diamond DA20-C1 (2000) down there around 11am. The trip is about an hour in that airplane. I asked my dad if he wanted to go for a ride, and I got the response I expected, and hoped for…YES! At about 10:50am, we went out to the airplane to pre-flight…the wind was FREEZING!! My dad sat in the airplane while I walked around, and soon I was belted in, ready to taxi.
This airplane has a bit of a reputation for being “rattly” on the ground, but I guess our guys in the shop took care of it. The winds favored runway 2, so that meant we had to taxi for almost two miles. I always lean the mixture back on long taxis so I don’t load up the plugs…I expected a normal runup, but didn’t get one. The mag check was awful. The left mag check was fine with about a 25rpm drop. The right mag…I’m surprised the thing ran! It shook so bad that I couldn’t read the instruments! The drop was between 220 and 250 rpm, and is well beyond the 150rpm limit, and even farther beyond a 50rpm difference between left and right. I tried “burning it off” by running up the rpms and leaning the mixture. No dice. We taxied all the way back to the ramp, and got further instructions to take the Comanche. I suggested this in the first place, but was told to take the Diamond. You can bet I was pleased with this! I LOVE flying that Comanche!
At about 11:45am, we lined up on runway 11 for a crosswind takeoff to save some time by not making the two mile trip to 2. It was nice and cool today, and the Comanche LOVES that cool air! Soon were climbing out of Bloomington and heading for a large hole in the broken clouds at 1900′.
VFR on top. One of my favorite things to do! We cruised on up to 5500′ heading southeast. In the Comanche, this trip is about 40 minutes with no wind. We had a decent push going down there with a 175kt groundspeed, and made it in 30. Of course, that meant the trip home would be slower…
About 18 miles out of Casey, I began noticing the broken layer was becoming more and more overcast-like, which I had expected. We found a good sized hole, and made our way back down below in to the haze at 2500′. Boy it got bumpy. Not terrible, but it was so smooth on top, that it felt worse than it was. We landed at Casey on a nicely resurfaced runway 4 with not even a chirp to the tires. This airplane is really a joy to fly and land.
My dad took this cool shot of the Comanche on the ramp from the FBO…
We took care of business, and about 45 minutes later, we were headed back out to the airplane. The one bad thing about the Comanche 260B, is that it has been tough to hot start lately. I wasn’t looking forward to spending the afternoon in Casey if we had to wait, but as luck would have it (just like the fact that I got to take the Comanche over the DA20), it started on the first hot start attempt! We back-taxied runway 4, and we were off again! This time, we drudged through the bumps to start since it was still overcast, and I didn’t feel like filing an IFR flight plan. So, we bumped though it at 2500′ until the clouds began to break again. When we got to the “legal” sized holes in the clouds, we climbed up on top to the smooth air again. 6500′ this time, heading northwest back to Bloomington with 145kts over the ground. Here we are coming back down thru the broken/scattered clouds at Bloomington-
I doctored this photo a bit to get the deep blue’s in the sky, and dark greens on the ground…on final to BMI-
When we taxied up to the ramp, I was somewhat pleased to see that they were still working on the DA20 outside with the cowl off. We had been gone for a little over two hours, so it wasn’t just “operator error”. After we shut down, I walked over to talk to Doug about the mag problem. He said it was a weak mag, and it had fouled the plugs on two cylinders, and the roughness was because it was only firing the other two. The mag will be changed next week, and I feel good that I made the decision to say “No go” to that airplane today. It would’ve been very easy to say “Ah, it’ll burn off in flight, and we’ll be fine”, and I’ll admit that it crossed my mind because I wanted to fly! Glad my noggin prevailed, and I was rewarded with a great flight in the Comanche with my dad.
1.4 logged.


















