ryoder Posted April 5, 2015 Report Posted April 5, 2015 The VSI in my C shows a very slight descent while sitting on the ground. I heard this is adjustable. Is this something my IA can do? He is waiting to get the ammeter and fuel gauges back so I'll ask him to make the adjustment if its possible. Quote
rob Posted April 5, 2015 Report Posted April 5, 2015 There's a screw on the bottom left side of the ASI that you can turn to adjust it. I'm almost certain the owner/pilot can make the adjustment. Otherwise, adjust for the discrepancy in flight. Quote
ryoder Posted April 5, 2015 Author Report Posted April 5, 2015 Wow. Can't believe I didn't know that. Thanks! Quote
carusoam Posted April 6, 2015 Report Posted April 6, 2015 Gravity has a tendency to make things droop... -a- Quote
RobertGary1 Posted April 6, 2015 Report Posted April 6, 2015 Also aggressive static testing is hard on them. You have to suck the static system up to 1,000 agl and hold it for a minute 43 appendix E That can tweak the vsi a bit. -Robert Quote
Guest Posted April 6, 2015 Report Posted April 6, 2015 Gravity has a tendency to make things droop... -a- Only in older Mooney pilots! Clarence Quote
Shadrach Posted April 6, 2015 Report Posted April 6, 2015 There's a screw on the bottom left side of the ASI that you can turn to adjust it. I'm almost certain the owner/pilot can make the adjustment. Otherwise, adjust for the discrepancy in flight. I was lectured to no end by a flight instructor about making this adjustment. I finally promised him that I would not, but I had no control over the hangar gnome that does weird little things to the plane. One time I caught the little sucker making sure my compass was full of fluid. 1 Quote
rob Posted April 7, 2015 Report Posted April 7, 2015 I was lectured to no end by a flight instructor about making this adjustment. I finally promised him that I would not, but I had no control over the hangar gnome that does weird little things to the plane. One time I caught the little sucker making sure my compass was full of fluid. Why were you lectured? I believe its a completely legal adjustment for a pilot to make. Does someone have evidence to the contrary? Quote
RobertGary1 Posted April 7, 2015 Report Posted April 7, 2015 It's not listed as preventative maintenance. You would need manufacture instructions to make it legal even if you were and A&P. But unless the fsdo has it in for you you're probably ok -Robert Quote
rob Posted April 7, 2015 Report Posted April 7, 2015 Really? It's essentially the same thing as adjusting the altimeter. Quote
Shadrach Posted April 7, 2015 Report Posted April 7, 2015 Really? It's essentially the same thing as adjusting the altimeter. pretty much...the only difference is that one is an aneroid and the other is a diaphragm. Quote
Guest Posted April 7, 2015 Report Posted April 7, 2015 It's not listed as preventative maintenance. You would need manufacture instructions to make it legal even if you were and A&P. But unless the fsdo has it in for you you're probably ok -Robert You would have to make a log entry for the FSDO to know it had been adjusted. Clarence Quote
Yetti Posted April 7, 2015 Report Posted April 7, 2015 if it was never broke, was it ever fixed 2 Quote
63C Posted April 8, 2015 Report Posted April 8, 2015 The VSI in my C shows a very slight descent while sitting on the ground. I have exactly the same situation on my VSI. Thanks for all the comments. Learn something everyday! 2 Quote
RobertGary1 Posted April 9, 2015 Report Posted April 9, 2015 There used to be a place in NorCal where if you left your tach with a $50 bill it would mysteriously return working fanatically. The guy was known for doing amazing work but I heard he retired. -Robert Quote
ryoder Posted April 9, 2015 Author Report Posted April 9, 2015 Leave your Mooney with me and a 24 pack of Miller Lite and it will leave clean and waxed. Quote
xrs135 Posted April 9, 2015 Report Posted April 9, 2015 Leave your Mooney with me and a 24 pack of Miller Lite and it will leave clean and waxed. LOL, and what is the drop off point?! 2 Quote
Hank Posted April 9, 2015 Report Posted April 9, 2015 Leave your Mooney with me and a 24 pack of Miller Lite and it will leave clean and waxed. I'm thinking Tampa's not that far away . . . 1 Quote
ryoder Posted April 9, 2015 Author Report Posted April 9, 2015 I really do like cleaning and waxing cars and airplanes. Maybe I should start a detail shop when I retire. Quote
mike_elliott Posted April 9, 2015 Report Posted April 9, 2015 I really do like cleaning and waxing cars and airplanes. Maybe I should start a detail shop when I retire. Your awful close to me, I may take you up on this! 1 Quote
Tommy Posted April 12, 2015 Report Posted April 12, 2015 Hijacking this thread What about altimeter? Mine is under read by 25 to 50 feet (within IFR tolerance). Can it also be adjusted like VSI? Quote
Guest Posted April 12, 2015 Report Posted April 12, 2015 Hijacking this thread What about altimeter? Mine is under read by 25 to 50 feet (within IFR tolerance). Can it also be adjusted like VSI? It can be adjusted but not with a simple screw like the VSI. Generally it is an instrument shop job. Clarence Quote
Tommy Posted April 12, 2015 Report Posted April 12, 2015 I see, oh well my bi-annual avionics check is coming up soon! Well get everything looked at plus IFR cert done! Quote
22 others Posted April 12, 2015 Report Posted April 12, 2015 While studying for my instrument written today, I discovered that the VSI is not a required piece of equipment for IFR flight. The practice test question asks what to do if you discover that the VSI reads 100 feet low while at the airport. The given answer was "use 100 feet low as the level flight indication." Interesting tidbit. Quote
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