AS9120B, ISO 9001:2015, and FAA 0056B Accredited

Whether you fly small jets or heavier-than-air aircraft, all will have an undercarriage that attaches the tires, skids, float, or skis to the airframe. It can be fixed, retractable, or a combination of both, where the main gear retracts while the tailwheel does not.  Knowing how the undercarriage supports your aircraft’s weight, while it is not on the ground or water, is critical to understanding how to take off, land, taxi, and maintain control of your vessel. Such knowledge is also helpful when carrying out maintenance or assessing different parts of your aircraft.


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Most lawnmowers, chainsaws, and other small gas-powered engines do not require batteries. Instead, they use a magneto ignition system to generate their own power to start the combustion engine. A similar system is used on aircraft on a much larger scale in the form of dual magneto ignition. In an effort to safeguard assemblies in case of electrical or engine failure, aircraft use a system of two self-contained generators which are each powerful enough to start the engine on their own. This article will cover five important pieces of information to better understand dual magneto ignition.


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