Most often actually two separate switches, the battery master and the alternator master. The battery master activates a relay which connects the battery to the aircraft's main electrical bus. The alternator master activates the alternator by applying power to the alternator field circuit. These two switches provide electrical power to all the systems in the aircraft.
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Whether you're drinking your morning coffee, evening tea, or something in between – this mug's for you! It's sturdy and glossy with a vivid print that'll withstand the microwave and dishwasher.
All mugs are custom printed on demand from our advanced facility in Charlotte, North Carolina.
The printing is amazing! I was amazed by how clear the image was :)
My brother is a helicopter instructor/trainer at the Rochester Airport for the ARMY. He said that the mug will be on his desk and he will be able to refer to it when instructing. Perfect gift for him!