Squat Switches

Editorial Staff

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

Verified

Key Takeaways:

Landing gear squat/weight-on-wheels switches are a common point of failure, leading to critical issues across various aircraft.
Malfunctions are primarily caused by wiring problems (internal shorts, broken/separated wires) or environmental factors like icy slush.
These failures result in landing gear retraction/extension issues, persistent "unsafe" indications, and even loss of cabin pressurization.
The design of some switches, particularly wiring covered by thick shrink wrap, can conceal defects and make inspection difficult.

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Beech 1900C

Internal Short

Editorial Staff