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Does anyone know if there is a limit on the number of pitot / static requiring devices ? Looks like more and more devices need those inputs . Encoder, VSI , altimeter , airspeed switch , G5 or SAI-340 . whats the cleanest way to install in order to avoid a bunch of tee union ?

Let me pick your brains on this one! Coming out of my annual on my 65 M20E, I had a problem with my ASI and took the Mooney twice to have it looked at. First time, nothing done, but I noticed a difference. Second time, 4 hours maintenance to suck everything out of the system and change the atlternate static valve, I saw a noticeable difference for one flight, then everything was back to "anormal". After take off, the speed would move down slowly then barely moved at all. Once on the ground, no change of indication, so attitude or altitude don't seem to be a factor. For troubleshooting sake, I went on alternate static and saw VSI and altimeter jump then settle at their correct values and ASI being at a normal value. When back on primary, ASI was again indicating incorrectly, sometimes on the high side, sometimes on the low side. My troubleshooting seems to point at a faulty primary static source, my mechanic is thinking about clogged or faulty plumbing along the line. Looking at my books, it looks as though the alternate static source joins the plumbing at a "T" joint almost at the start of the plumbing of both sources. Any ideas???

Good Evening Mooneyspace folks, Discrepancy: Noticed radio static during run-up, after annual completion. Background: "high low volts" problem discovered during night landing 4/10/2013 (discovered 24V landing light installed in 14V system, R & R with PMA LED Landing Light. Replaced voltage regulator, Oil Pressure system and Fuel Pressure system amplifiers, CHT and probe R & R’d….returned to service 5-11-2013 (cost $3500) "high low volts" problem 1/13/2014 (see Annunciator Troubleshooting) Radio Static Repair: After researching Mooneyspace, several forum posts recommended checking master switch first for corrosion. While inspecting for corrosion all “male terminals” on back of switch were clean. However one “female” terminal appeared burnt at locations where previous maintenance had crimped vinyl heat shrink. The wire run appears to go to voltage regulator Notes from attached photos: 1) Burn marks common to crimped locations 2) Discoloration of 0.25” female terminal connection 3) No discoloration of 18 AWG wiring. (0.1 milliohms) 1-27-14, I will install new pre soldered AWG 18 terminal end and heat shrink to R & R wire terminal end. Question: Has anyone else seen burnt wiring and do you know what the root cause was? Thank You Steve