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PT20J

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PT20J last won the day on December 9

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    0S9
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    1994 M20J

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  1. Some electrical components are listed in the IPC but the most reliable way to find them is to look at the end of the Service Manual for the electrical equipment chart that matches your serial number and schematic and locate the reference designator from the schematic in the chart to determine the component part number. In this case the reference designator is D1.
  2. You have to go into Config. It's on the EIS page.
  3. The F2 terminal should be grounded. The F1 terminal goes to the voltage regulator. The diode should be connected between F1 and ground with the cathode (the end with the band) connected to F1. (The Mooney schematic is incorrect). This is a flyback diode that absorbs EMF from the field when the current is suddenly removed which sometimes causes the field CB to pop when the ALT switch is turned off. I'm not sure why you would have two diodes.
  4. Set it to record flight time. That agrees with FAR part 1 “Time in Service” for maintenance records and will give you lower total time than any “engine running time” setting.
  5. The IPC calls for two roll pins and I believe there are two 90 degrees apart, but I've never had to replace them. @kortopates will know. The solder connections to the top microswitch in the picture look a little funky. Maybe that's the problem.
  6. The schematics are actually part of the Service and Maintenance manual. Chapter 91 at the back of the manual has the part numbers for electrical components. So you find the schematic for your serial number and look up the reference designator for the part you want and then go to the section in chapter 91 for your serial number and find the part number that corresponds to the reference designator. Most will be standard electrical components available from any number of online electrical parts suppliers.
  7. Is this a crack in the exhaust?
  8. Maybe this picture from the IPC will help. Looks like the roll pins sheared. So it will be necessary to figure out why. Probably a problem with a limit switch.
  9. Has anyone used Bruce’s lighter travel covers for the occasional night out?
  10. The o-rings leak with 5606, too. I just had to rebuild my master cylinders last year. I've replaced piston o-rings in both sides. So, be sure to put in a new o-ring when you take the piston out of the caliper to clean it. If you do eventually have a master cylinder leak, it's a good time to replace the brake hoses.
  11. 5606 does that with age. Many have switched to a newer synthetic MIL-PRF-83282 fluid such as Royco 782 which doesn't seem to do this.
  12. Maybe you are right. I was just referencing the IPC.
  13. Mooney changed from manual to electric when it changed the electrical system to 28V. It did offer a 14V retrofit kit to optionally add them to older models.
  14. The rub is that there is a prohibition against taking off with inoperative electric cowl flaps in the POH/AFM Limitations and FAR 91.9 prohibits operating contrary to a limitation.
  15. If the motor runs but the flaps don’t move and you can move the flaps by hand, it has to be something broken mechanically. Check the roll pin.
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