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Mixture control bottoms-out against the firewall?
Is it possible to determine whether or not this is specified in the
service manual for the particular Cessna aircraft I'm flying? It's a 172N model. Are the service manuals available online? Cessna gives NOTHING away. Paper copies of their manuals will start at around US$180, and if there's any temporary revisions they charge $12 or $15 for two or three pages. The 172 manuals I have here (L and M) call for some "bounce." It's standard aircraft practice to ensure that full travel is obtained at the engine device, whether it's throttle, mixture, carb heat or whatever. Even flight controls should hit the stops at the control surface's mechanism before the cockpit end hits anything. Control systems flex and stretch, especially under load. Many companies will publish manuals or other service information on the 'net to make sure it's available, and others want every buck they can squeeze from it. Cessna requires a rather expensive subscription ($360/yr) for service info (updates, service bulletins and service letters, etc.) while American Champion maintains a website to do the same thing. Lycoming's website publishes a service manual currency page, but McCauley and Cessna do it only through subscription. All of them are owned by Textron, yet there's no consistency. Dan |
#2
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Mixture control bottoms-out against the firewall?
"Mark Hansen" wrote in message ... I have a maintenance question. I read somewhere that the mixture control should not bottom-out against the firewall when full rich, as the pilot would not be able to tell if the full-rich position was achieved, or if the knob just hit the firewall stop. However, I'm wondering if this is just a rule of thumb, or if there is an actual FAR which dictates it, and which FAR that is? Thanks, -- Mark Hansen, PP-ASEL, Instrument Airplane Cal Aggie Flying Farmers Sacramento, CA The FARs dictate that maintenance be performed per the manual, and if the manual says so, then the FAA says so... |
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