Aviation Glossary - Chip Detector

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Chip Detector

A component in a lubrication system that attracts and holds ferrous metal chips circulating with the engine oil. Some chip detectors are part of an electrical circuit. When metal particles short across the two contacts in the detector, the circuit is completed, and an annunciator light is turned on to inform the flight crew that metal particles are loose in the lubrication system.

source: FAA Aviation Maintenance Technician Powerplant Handbook (FAA-H-8083-32)

A warning device that alerts you to any abnormal wear in a transmission or engine. It consists of a magnetic plug located within the transmission. The magnet attracts any metal particles that have come loose from the bearings or other transmission parts. Most chip detectors have warning lights located on the instrument panel that illuminate when metal particles are picked up.

source: FAA Helicopter Flying Handbook (FAA-H-8083-21A)

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