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moosebreath last won the day on May 14 2016

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About moosebreath

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    Advanced Member
  • Birthday 08/27/1954

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  • Location
    Williams, Oregon
  • Interests
    Aviation, Amateur Radio, Aikido, Astronomy, Rugby
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  • Model
    '97 M20J

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  1. Be prepared for an exciting ride if you open the alternate static source while the autopilot altitude hold is engaged. Try it in VFR to see what happens.
  2. I had the same problem with the same solution. We finally double clamped the most troublesome interconnect tubes and that has been a long term fix.
  3. I had the same intermittent startup self test failure with my KC192. It is a common problem caused by faulty capacitors in the computer power supply. The colder they are and/or the longer the unit sits unused the more likely the problem is to occur. This explains why it usually happens on the first flight of the day. A work around solution is to postpone the self test until after the engine has run for a while to allow the capacitors to charge. Eventually the unit will fail without a self test sounding the warning tone as soon as the unit is powered on. You can still get around the problem by pulling and resetting the autopilot breaker a few times but this is clearly not a long term fix. Autopillots Central is very familiar with the problem and can quickly repair it for you if you pull and send them the KC192. The disconnect switch and trim servos can cause similar problems. The clue that it is the power supply capacitors is the occurance of the failure being correlated to the time since the computer was powered up.
  4. For my GTN 750 the cost is $995 yearly for full US Jepps with a full set of paper enroute and area charts. Two computer installs are included, I use one on my PC and the other in ForeFlight. I think this is very close to the cost of Garmin data and the graphics are MUCH better. I agree the unlock is way too costly.
  5. This was removed during my panel upgrade several years ago. I suspect it is an item that perhaps one person in the world might really want. I that is you, it is yours for $50 delivered payment via PayPal. I will simultaneously advertise for sale to non Mooneyspace folks on eBay at a higher price.
  6. It almost certainly is the problem. The contacts in the switch are known to degrade with use causing either partial contact or a high resistance in the closed portion of the switch. The full power for all the servos is routed through that switch it does not operate a relay. Hence when it gets a bit worn the slightly lower voltage at startup causes a fault in the KFC computer. A lot of other folks have has similar faults corrected by switch replacement. It IS easy to change if one gets the cover off!
  7. My autopilot has a case of faulty disconnect switch disease. The symptoms are the classic horn sounding at power up and failure to complete the self test. This goes on until the plane warms up, you recycle the power a few times, cycle the disconnect switch a few times, or maybe until the planets align. Once the self test completes the unit works perfectly for the whole day. The hanger elves have a replacement disconnect switch. It is clear to access the switch that you remove the screw on the top of the switch cluster. Then it appears you must remove the two screws on the trim switch and remove that switch to get to the second screw holding the upper cover. The question is ... how exactly do you do that? I can pull out the trim switch a small way but not far enough to get to the lower screw. I would have to use a very small right angle screw driver to loosen it. I do not want to pull with force on the trim switch. Hopefully someone out there who has done the job can tell me the secret.
  8. The little button gauge on my '97 J model sticks. It is obvious that the scale has come loose inside the case and interferes with the needle. The question is: How in the world do you remove that gauge from the lower console? The console appears to be riveted together. Surely you do not need to drill out those rivets and disassemble the console to get to the gauge. If so, I may just tap it to read properly for a while longer ...
  9. I have a 2 1/4 inch Umi. The sensor mounts to an unused port on one of the mags. I replaced an EI electronic tach that the previous owner installed. I really hated that thing. The LCD display was hard to read and all the leds made it look like something better suited to a pinball machine than a Mooney.
  10. On my J you must pull the stall horn breaker AND the gear horn breaker to silence the stall warning. This makes absolutely no sense to me but is apparently common. I figured this out only after listening to a faulty stall warning at cruise for an hour on a long cross country.
  11. My booster pump switch cap fell on the floor when I turned it off on my last flight. The problem was that one of the plastic hooks on the rear of the switch cap had broken away. As forum members well know you can not buy just the switch cap. My solution was to purchase and install an entire new switch. These are $240 from Lasar. Having nothing to lose, I attempted to repair the broken part this morning. This is the stupidly simple part. I cut a tiny piece of 18 gauge galvanized wire and bent it into the shape of the missing plastic hook. I then held the inverted switch cap flat on the bench with a pair of pliers and heated the wire with a propane torch. I inserted the hot wire into the switch cap and allowed it to cool. Then I snapped the cap back on the switch and, voila, it works perfectly. I hope I am not the first person to think of this but perhaps this tip may help somebody save .24 AMU. Anyone need a boost pump switch at a reasonable price?
  12. I don't have to find a report because I have HAD this problem, in my Mooney. I can therefore tell you from experience that gliding to the airport with a dead engine and passengers onboard is not fun. In an effort not to repeat this unsatisfactory life experience I personally do not run tanks dry purposely and prefer to land with a generous fuel margin.
  13. The manual does state that the altitude hold mode is automatically disengaged when the glideslope is captured in approach mode. This is indeed how my KFC 150 acts. It is a simple enough thing to test in a given airplane.