All Activity

Not even how antennas work. Nor is it how Transponder and ADS-B signals work.

This!^^^^^^^^^^^^^^^

I installed one in my Cessna. I replaced the transponder antenna with a RAMI antenna. It was reasonable. The problem isn’t old and crusty, it is the old antenna doesn’t have the bandwidth to handle both the transponder and ADS-B signals. https://www.rami.com/product/av-74_transponder/

Flight schools do it routinely, and since those airplanes fly a lot they don't have the usual issues associated with engines that sit for a long time. It doesn't seem unusual for flight schools to get 3000 hours out of engines. Mine is currently sneaking up on 2400 hours, but it had an IRAN about a 1000 hours ago that included rehoning the cylinders, replacing a guide, etc. I have one cylinder that is getting a little quirky on compression (comes and goes) and oil consumption is creeping up. None of that means an overhaul is imminent, just that it needs to be monitored. Borescopes and oil analysis are still great, so I'm not too worried.

Have you verified your dipstick to actual oil in the engine? I just did and found that the dipstick reads one quart low from what I put in. So, reading 6 quarts is in reality 7. Just found it interesting.

QAA and Hartzell are a match made in hell, sorry. And both of them working on a Slick mag, no thanks. Sorry you're going through this! I concur with converting to Bendix and optionally a Surefly or ElectroAir. I never had any such issues with my Bendix dual mag and now with two ElectroAir systems.

If you believe that, you might also want to replace all your nav/com antennas as they also have BNC connectors. But if your BNC connector is truly "crusty" with visible corrosion, then that's a different matter.

I did that once, bought a 0 SMOH engine that had been sitting for 11 years. I took it to the local engine shop and had them tear it down and put it back together. They only charged me $700. That was in 95, so it will be more now. The only thing he found was some rust in the cylinders. He rehoned them. It turned out to be a good engine.

For those that like landing with the speed brakes deployed, what to you raise first on a go around?

This is exactly why the wise/experienced folks over on Beechtalk recommend fixing factory-new Continental cylinders before putting them into operation. The factory just does not do a great job installing valves! There are lots of PIREPs from Powermaster overhaul customers making full TBO+ runs without doing tops, and of course there are magnitudes more PIREPs of TOH on factory engines in the ~800+/- hour range due to valve degradation.

I like the emphasis the brief pause provides on positive rate; I may use this. I've observed myself enough over the years to know that positive rate is something I really need to focus on in a missed approach or go around (as opposed to continuing to fly level like you often do in a pattern). [will never forget the jet that took off IFR from my home airport several years ago; didn't climb and flew into the power lines; saw the black smoke plume; very sad.]

Was this a case of the installer not RTFM? (reading the manual) I put in a dual ElectroAir kit in my -A3B6D J and the manual was quite explicit about setting the engine to TDC #1 when installing the timing housing (on the mag interface) or the trigger wheel on the crankshaft.

I have a G3X with EIS. I never let the CHTs go much past 400 before I did something about it. They rarely went much past 400 with the cowl flaps open. With the cowl flaps closed however, about 8.8 GPH was about all the power you could make without the CHTs going crazy. I once let it go to about 425 before I started leaning. That was about 9.5 GPH. Maybe it would have gone to 600!

Would you but an IO-360 with 550 hours on it since overhaul that was done 15 years ago? Considering it’s impossible to see the cam and lifters during inspection?

I haven't flown the Skywagon, but I think all the high wing airplanes I have flown pitch up when flaps are applied and the opposite when flaps are retracted. Why? The CG of a high wing airplane is below the drag force vector of the flaps causing a pitch up moment around the CG when flaps are applied. The opposite for a low wing airplane like the Mooney. (The exception is the Piper. Maybe the reason is its stabilator. I don't know) At any rate you can't compare the two. I will say on the 310 HP upgrade to the Acclaim, going to full power on a go around and bring the flaps up 1st will provide quite a surprise to the uninformed that could easily lead to an LOC accident.

I’m for removing all nonproductive energy consumption on any ascent as soon as possible.

Vlo (going up) is 106 kts for the Acclaim Type S.

Here is an opinion from Aircraft Magneto Service, who were kind enough to offer an opinion: Impulse cams failures happen, but I would call it exceptionally rare. QAA are now exclusively using Hartzell components, they have issued at least one service bulletin (SB 225) in which they had an issue with the snap rings coming loose. I have not seen many Hartzell mags 2024 or newer, its not out of the question that they have a manufacturing defect on newer impulse cams. Engine vibrations do reek havoc on impulse cams, If you haven't I would ensure the prop is balanced and no unusual vibrations are occurring. When installing the drive gear on the magneto, the drive gear should have some "slop" to it, end play up and down. I have experienced issues on Hartzell cams before where the gear was too tight and have to polish the black oxide off the portion that fits up through the gear. Also its prudent to apply grease inside the gear to prevent binding. Snap the magneto over in your hand after the gear has been installed and ensure its "smooth", no binding. Steve Cotton AMS

Iver seen this before. A member had his Surefly installed at 25 degrees, and had the DIP set to 25 also. After he put the gear up, the CHT continued to 600 degrees which was the gauge limit. He barely got back. It can get you killed.

Indeed, I was merly comparing clean and full dirty settings, there is no middle sitting but ideally, 1/2 flaps is great in Mooney, not too draggy and has lot of extra lift. Even full-flaps are not draggy, the M20J screams in ground effect with full flaps all the way to VY, so I never felt the need to get them up quickly or die, I just lift the gear and bu the time it's "gear safe", I have 80kts-90kts and I pull flaps up. I had someone retracting them at 55kts with 15deg climb after balked landing and go-around, he made my day, luckily the gear was always down as we bounced 2nd time (he balked landing and in 50ms, he put full power, 15deg up pitch and retracted flaps)

The Mooney has more flap settings than just up or down no? I’d also imagine with full go around power you should be accelerating at a respectable rate

Indeed, if you plot L/D curves with clean and with dirty flaps, you will see that there is a "critical speed" few kts above VS1 where both will intersect. When one is flying straight and level in ground effect, Lift = Weight, the two drags at that "critical speed" are similar, this effect is very prononced for aircraft where VS1-VS0 spread is large. For aircraft, where VS1 = VS0, the effect is small, and there is no risk from retracting flaps once airborne. Another way to think about it is the best L/D near VS0 and VS1 is obtained by using "takeoff flap setting". Some STOL pilots with mechanical falps will do everything to optimise their use of flaps, they fly clean until VS0, full flap at liftoff near VS0 before retracting flaps when few kts above VS1, this won't work in Mooney with electrical flaps (I have not tried but I presume fiddling can make "50ft takeoff" in Mooney, 30ft shorter, so not worth it: set takeoff flaps and leave it there )

Depends on your flaps settings What’s your balked landing in the POH/AFM say? if I was dragging full flaps I wouldn’t want to do a max performance go around still dragging full flaps, I’d probably default to something around whatever your short field takeoff setting is for max lift. Gear is easy, positive rate gear up As for pitch changes, don’t skip arm day, I have yet to meet a plane I can’t just push to where I want for as long as it takes to trim, and I don’t consider myself a pro arm wrestler or anything For me it would be “go around, flaps XX” -> “positive rate gear up” my flow would be easing back on the control while adding power and hitting the TOGA (one movement) -> flaps to go around setting -> once positive rate gear up

A lot of problems can be avoided by making the decision to go around early when there is still sufficient airspeed and altitude that technique isn't critical. If you have to go around during the flare it gets much more dicey. For those interested, here are the aerodynamic coefficient curves for a M20K clean and full flaps that I got from a Mooney engineer many years ago. I don't have one for takeoff flaps. M20K Aerodynamic Coef - Flaps 0.pdf M20K Aerodynamic Coef - Flaps 33.pdf

Garmin Garmin talks to Garmin and it’s really the top choice