Squat Switches

Editorial Staff

Monday, September 21, 2020 at 02:08 PM ET

Verified

Key Takeaways:

Landing gear squat switches (weight-on-wheels switches) are a common point of failure across various aircraft types, affecting critical systems like landing gear operation and pressurization.
Failures are frequently caused by internal shorts, broken, or separated wiring within the switches, as well as external factors like icy slush.
These malfunctions lead to serious operational issues, including failure of landing gear to retract/extend, persistent unsafe gear indications, and loss of cabin pressurization.
Diagnosing wiring damage to these switches can be challenging due to protective coverings that obscure defects, often requiring switch removal for detection.

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Beech 1900C

Internal Short

Editorial Staff