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Old 12-08-2019, 07:51 PM   #1  
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Default Are switch guards in the MEL?

I don't have experience with 121/135 ops or MEL's (yet) but I'm curious;

Are the plastic switch guards required or mentioned in MEL's? What happens if one or both of the joints break and the cover falls off?
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Old 12-09-2019, 07:22 PM   #2  
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No experience with this, but I believe if the guard is broke, the switch is considered inop. Which may or may not be a no-go.
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Old 12-09-2019, 07:50 PM   #3  
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Itís a guarded switch for a reason.
Guard inop switch inop.
If itís a guarded switch and it has a little break wire securing it, break wire broken needs to be replaced.
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Old 12-10-2019, 07:07 PM   #4  
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Quote:
Originally Posted by TiredSoul View Post
It’s a guarded switch for a reason.
Guard inop switch inop.
If it’s a guarded switch and it has a little break wire securing it, break wire broken needs to be replaced.
Not all guarded switches are break-wired on all aircraft.
Otherwise, I agree.
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Old 12-11-2019, 03:30 PM   #5  
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Many airplanes have a significant number of guarded switches that are used on every flight, the guard just prevents accidental activation of a switch that could cause damage if activated at the wrong time.

Switches that are safety wired are used in abnormal situations.

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