carl

thanks , Clarence

Is it legal to fly without seats ? of course you need the pilot's seat. I was thinking if I do this I want the seats removed and done except the pilots seat , then I could fly. then lastly do the pilots seat, or maybe do it first and send out the rest after . Down time ? If it is legal i'd do it , considering recalculation of weight and balance )

I flew today for an hour and cleaned the belly for 5 hours . I am so sore. I was planning on pulling it out on the ramp and taking some pictures of the "Full moon over my Mooney" but drats it is clouding up.. I had a fun time cleaning the belly,listing to my aircraft radio a Mooney ,N21434 flew in ,first one I saw at Altoona,then he left . Great day anyway

thanks for all your input yep IFR rating is coming .

This is a purely theoretical question. I have recently been flying with the Positive Control (PC) operating . In its simpler form this levels the wings and nothing more. I was thinking of a situation where a VFR pilots end up in IMC conditions and loses control and crashes. Lets say a descent from VFR on top,through a cloud deck to VFR below. Would the PC prevent this. Or would the feeling of turning be so great the pilot would override the PC and then lose control. A case of not trusting his instruments ( he is just a VFR pilot). I was thinking about this today driving home from work with a nice cloud deck overhead. Carl

Ha ha , No , this is not mine, it is Dr. Carruba. I just use it. I also teach it,but my students don't get it. carl

Having spent days between 10,500' and 13,000' doing strenuous hiking and climbing, I don't think I'd be hypoxic at 14500 sitting on my a$$ in an airplane, but I don't know that to be the case. When I lived in the Bay Area (pretty close to SL) and traveled in a day to the Cascades or Sierra, I could easily go from sea level to 11k + in less than 14hrs using an intense amount of aerobic activity with short bursts of anaerobic climbs. Was I operating in mild hypoxia for 3 days? Ross, yes you were hypoxic. Your hike is a classic med school blood gas scenario. USMLE World Test-Taking Strategy: Acid Base Posted by Dr. Christopher Carrubba, USMLE Tutor & Senior Contributing Editor ~ Med School Tutors Jan 7, 2015 11:31:00 AM A healthy 45 year–old male travels to Switzerland for a mountain climbing trip. During the trip, he stays in a high-altitude camp in the mountains at over 14,000 feet above sea level. After 6 days, he has blood drawn as part of a research study. Which of the following arterial blood gas values would you expect to see with this sample: pH PaO2 (mm Hg) PaCO2 (mmHg) Plasma HCO3 A: 7.25 98 21 11 B: 7.32 60 55 31 C: 7.38 70 40 22 D: 7.49 60 20 15 E: 7.50 96 30 17 F: 7.6 72 50 32 When I was studying for Step 1, I would initially panic when I saw questions like this, thinking, "Not only are you asking me to pick between six answers, you’re asking me to work through several variables to arrive at the correct choice!" Now, as a tutor, I see a similar form of anxiety in my students when they encounter questions like these or the dreaded up/down arrows often seen in Endocrinology. However, what I am here to show you is that with some very simple test-taking strategies, you can make questions like these a strength when taking Step 1. Let’s break it down into a series of steps: Step I: I always recommend that students start by reading the question at the end of the vignette first, and then very quickly looking at the answer choices. This can help put the question in context from the start and allow you to more easily decipher clues along the way. Here, we quickly see that this is an acid base question. Now, going through the vignette, it's clear that this is an acid base question about the effects of high altitude. Step II: Make your own answer. In questions like this, I encourage my students to ask, “What would I expect to see?” In this question, that requires understanding the physiological effects of high altitude. Briefly, remember that at high altitude, due to the declining PaO2, our body develops a compensatory tachypnea. As a result, we are blowing off more CO2, which will subsequently lead to an increase in pH. This is respiratory alkalosis. As with all acid base questions, the next issue becomes assessing for compensation. At this point, 6 days in to his trip, we would expect the patient in this vignette to have metabolic compensation by decreasing his bicarbonate. Now, returning to the four variables in this vignette, we can say that the correct answer will have a pH > 7.4, a low PaO2, a low PaCO2, and a low HCO3. Step III: Now it’s time for process of elimination. As we have diagnosed a respiratory alkalosis, we can instantly eliminate answer choices A, B and C as these all have acidotic pH’s. Moving on to PaO2, we can now reasonably eliminate answer choice E as we would not expect a PaO2 of 96 at a 14,000 foot elevation. In the span of a few seconds, we have taken the amount of possible answers from six to two! Now, let’s make the final choice. Step IV: We are now left with answer choices D and F. So, which is it? Again, as we have been dealing with a respiratory alkalosis, we know that the correct answer will have a low PaCO2. Thus, we can eliminate F and are left with D. However, before selecting this answer, we must confirm that the final variable, HCO3, fits with our choice. Here, given that the patient has been at altitude for 6 days, we would expect that metabolic compensation has occurred, thus, we would expect to see a low HCO3. A HCO3 of 15 as seen in answer choice D allows us to definitively know that we have made the correct choice. As you can see, creating our own answer before picking one of the many choices kept us from panicking at so many options and allowed us to rely on process of elimination to confirm a correct response.

my 67 e has the short rudder and the wickerbill . wickerbill !i was looking at it yesterday and thinking . im going to have to ask .what the heck is this thing and what does it do . thanks for.answering before i asked .

HRM, I have that button , which is usually covered by the end of a crutch, a crutch shoe, the rubber cover holds it down . I just took it off and the pc works great. I do need a new crutch shoe because it is old and dirty. I like to have the PC off for landings and take off. How do others handle landings and takeoffs ? You have a boost pump indicator light. I do not have one. That is a great idea. Shadrach Flew AOO to Hagerstown VOR and back with PC working. Didn't have much time so I did not land and look for you Ross. I will soon.

Thanks ., I really like the PC . And with the roll trim , I will eve like it better.

HGR is on my list . I have a picture of the gem showing a dead spark plug number 1 cylinder ,left mag. but on the left lower is the roll trim . heading bug Trak aid???? I never heard of that . I wonder if I have that too.

Normal oxygen blood levels are 80-100 mmHg which has saturation above 95% Oxygen levels 60 -79mmHg are mild hypoxia with a saturation reading between 95% -90% I would be concerned if I were the pilot of an aircraft with a reading of less than 95% I will reword that .I would not operate an aircraft with a saturation less than 95% How do you correct a low saturation? Increase your oxygen. You should never have tunnel vision, black spots, blurred visions, trouble seeing lights, colors. These are indicators you are already hypoxic. Caveat: I’m just a guy and not a good pilot. The calculations above are based on the equation developed by Severinghaus*: Oxgen saturation calculated SO2 = (23,400 * (pO23 + 150 * pO2)-1 + 1)-1 http://www-users.med.cornell.edu/~spon/picu/calc/o2satcal.htm

ross . well i'll be damned ! On the turn coordinator . yep. it even says roll trim . Clarence , the mooney i flew in before had it on the yoke . i assumed this one just didn,t have it . which was the reason for the rubber stopper from a crutch jammed over the yoke button.. really. electric trim... oh my

Pulse oximeters are worn on the extremities; because of this location they present a lag between central oxygenation, cerebral oxygenation and peripheral oxygenation. What I mean here, central and cerebral oxygenation are the same, the lag is in the peripheral oxygenation. There is a smaller lag with smaller patients simply do to size difference (and other difference). The adult lag component can be seen on ICU patients with Licox placement, directly measuring cerebral PaO2 Pulse Oximetry gives a false sense of security that I believe develops by reading a saturation monitor and then believing you are ok, when you are hypoxic already. I have spoken to pilots who think a saturation of 90% equals a oxygenation of 90mmHg ( wrong is it is 60, Hypoxic ) The Alveolar gas equation absurdity does not exist. It is not an absurdity it is a reality. At these condition gas flow is negative and leaves the body. Yes this is incompatible with life, which is my point, when we are suddenly placed in that environment there is little time to recover. How did Reinhold Messner climb Everest without oxygen? He did it gradually allowing he body to adjust. He and the Tibetan Sherpa have 1) increased amount of hemoglobin so the oxygen carrying capacity is increased 2) Hyperventilation, he was able to lower his CO2 levels much lower than most, (the PACO2 was possibly 7–8 torr) 3) Amazing oxygen uptake through training and natural ability. Of course mountain breathing (pursed lip breathing) added a bit of positive end expiratory pressure. This shifts the alveolar equation into the positive. Irish tiger "I noticed one thing in the requirements - you HAVE to have a medical certificate to participate. My best friend (who is a physician by the way) is the only person that flies with me in the flight levels, and I want him to participate in an event like this sometime. He has no desire to learn how to fly, he could care less. But - just because he's not an aviator and doesn't hold a medical certificate doesn't mean it won't be beneficial to him!!! I really want him to go" He just needs a third class medical certificate, as you state, a student physical , he does not have to take any flight lessons at all. Just visit any AME. What is your blood oxygenation when your saturation monitor reads 90%? The solution? Never let hypoxia happen. Nasal cannulas are workable to about 14,000 but above that I believe a personal improved standard should be used: At least one pilot at the controls shall wear, secured and sealed, an oxygen mask that either supplies oxygen at all times or automatically supplies oxygen whenever the cabin pressure altitude exceeds 12,000 feet MSL; Carl

Pulse oximeters are dangerous. They are great for showing trends in a hospital environment, but have no place in an aircraft. Pulse oximeters are worn on the extremities; because of this location they present a lag between central oxygenation, cerebral oxygenation and peripheral oxygenation. This lag may be upwards of 2 minutes. This depends on several factors such as cardiac output, muscle movement and ambient temperature. So, what you are seeing has already happened, it is in the past. Go on, you are in your kitchen; put your pulse-ox on. Walk around and breathe, look at your reading, 98%. Now hold your breath. Time how long it takes to get to 90% (a moderate level of hypoxia approximating an oxygen pressure in the blood of 60 torr). I bet you can’t hold your breath that long. Why? Because as you are holding your breath the oxygen level in the blood drops fast. It is felt first in the brain. But because you are checking it at the periphery, deoxygenated blood will get to that location in the longest amount of time. Oh yes and you were walking around right. Try it again after sitting for a while in one spot, sit on a couch for thirty minutes and repeat the test. Hold your breath until you reach a sat of 90%. It will take longer for the extremities to be perfused. Your brain will be hypoxic much sooner. Now don’t try this again at the flight levels, where it might be a bit cooler, blood has pooled in the extremities. Remember get your sat monitor up to 98% to start. Remove your oxygen; your cerebral oxygenation will tend toward zero within one minute, one cardiac volume cycle. The only reason it doesn’t go there immediately is due to stagnant oxygenated blood being circulated, your oxygen to your brain is coming from your fingers, not from your lungs. Now glance at you pulse-ox as you start to black out. What does it read? 98% give it a couple of minutes to adjust. Out of time. Pressurized cabins have a cushion, even when they fail, they leak and the pressure does not go immediately to outside pressure, giving the crew (two pilots) time to put on their masks. With unpressurized cabins you are already breathing outside the plane. And there is really nothing outside to breath. 25,000 feet pB =282.4 mmHg PAO2 = 21%(282.4-47 ) – (40)(1.25) PAO@ = -0.566

Ok , i flew again First before I took off I removed the hold down for the PC . When I turn on the ground the ailerons want to correct . I then put the hold down back on and took off . The plane flew pretty level , then when I took off the PC hold down the plane leveled itself and flew great. I have balanced the fuel. I don't have a roll correction for the PC, That would be cool. So one of two things; 1) fuel balance really makes a difference . 2) the PC wanted to turn left and was stuck until I released the hold down and that fixed it. I think I would like a roll adjustment , because I liked the PC today. First time I used it. But I don't think I like it when I get close to landing or takeoff. Hmm Thanks all carl .

"Easy to check, just disconnect the left-yoke-horn button." HRM is this something I can do ?

thanks i will not get rid of it yet . and check it.out.

I just saw the same question in modern Mooney section .

I just saw this, before I posted the same question in the vintage section .

I noticed I am always holding in a little left aileron. If I left go of the yoke the plane , 1967 M20 E, will roll into a left turn. Will a weight difference cause this? More gas in the left side. Or cause I'm solo and on the left side. Or is it that wing leveler, which the button is taped down. Should I have the wing leveler removed ? It does not work. First step. I will balance the gas and try again.

ha ha . classic . i think even people.who like their tripacer. no longer like them . i have a friend with one . he convereted.it.to.a.tail .dragger .

just.off topic a.small amount what is the shop rate a&ps- ia charge for work . my "new " guy (ap ia) is charging $50./ hour. i have never be charged for anything specific just.a rate . spark plug removel.cleaning reinstal .. .2 hours well maybe that is specifics too ..

and now it is in good hands too, empty weight ?? oh no, not the fat girls again

I think his intentions were to make it the nicest M20E flying, and fly it for the rest of his life. I guess he lost his medical , then it was down hill from there . Ronald A. Westbrook, Lt. Col. USAF, (Ret.), 72, of the High Point Community of Chickamauga, Georgia, died on Wednesday, November 27, 2013. a compilation: "Mr. Westbrook was a lifelong resident of the North Georgia area where he was a 1959 graduate of Rossville High School, 1970 graduate of the University of Tennessee at Chattanooga, a member of the Oakwood Baptist Church, and a member of the Chattanooga Valley Lions Club having served as Past President. He retired from the United States Air Force with 33 years of service having served during the Vietnam Era receiving numerous accommodations and medals. He also retired from TVA in the early 1990’s as an Engineer with over 20 years of service. He was Past Commander of the 241st EIS Squadron at Lovell Field and had managed the Barwick Airport in Lafayette where he was a Certified Pilot and Flight Instructor. Westbrook, a 72-year-old who suffered from Alzheimer's disease, knocked in the dark on a stranger's door last month. Police said a man inside that home, 34-year-old Joe Hendrix, got a .40-caliber handgun, went outside to investigate and shot Westbrook in a horrible mistake."