![]() Swinging the compass is important to avoid deviation: Fact It is required to always have a professional, such as an instrument repair shop or an aviation maintenance technician refill the compass. There is also a risk of adding too much water to the alcohol-water based compass, causing the device contents to freeze in certain temperatures. For example, when you put water in the oil based compass, it will rust the magnets and discolor the card in the magnet. If you use the wrong liquid for your model, you can ruin the device. There are two types of liquid compasses: alcohol-water based and oil based. I can fill the compass with any liquid that has a low freezing temperature: Fiction Bubbles can cause a number of issues with the equipment, so it is recommended to immediately get it looked at. If you see a bubble, most likely there is a leak somewhere in the device. Generally, these compasses are made to not have a bubble in them. Regardless of the origin of the nomenclature for the whiskey compass, CTS is bringing you some myth-busting facts about the compass and proper care techniques for the device. Others claim that the US Navy would use whiskey in their compasses, up until sailors started drinking it due to their dry ship rule. Others say since the compass is also known as a ‘wet compass’ and with whiskey being the phonetic pilot-alphabet for ‘w,’ it then became the whiskey (‘w’) compass. There are many rumors as to how the magnetic compass, found in the cockpit of many aircraft, became known as the ‘whiskey compass.’ Some say it was dubbed the whiskey compass to remind pilots to refill the compass fluids with the alcoholic beverage instead of water due to its lower freezing temperature. ![]()
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