idiot light


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idiot light

A warning or caution light in the cockpit, in lieu of an instrument, which shows the functioning or malfunction of a certain system. Idiot lights may be provided in lieu of ammeters, the engine oil pressure gauge, etc. In these instances, they will indicate that the generator is not charging and the oil pressure is low, respectively. Also called a nondiscrete indicator. The term, however, is rarely used.
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References in periodicals archive ?
Over the years, they have been dubbed "idiot lights" based on the idea that if you didn't take action when the light went on, you were an idiot or because even an idiot could understand the glowing red light with a "Check Engine" written beneath it means something is wrong.
On a late model setup the tachometer might have a couple internal idiot lights to provide some sort of engine warning if things go awry.
Modern aircraft are festooned with warnings of various kinds: stall warnings, landing-gear warnings, Mach overspeed warnings, low-rotor rpm warnings and even idiot lights suggesting doors aren't closed.