WDM-INOP

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5 days 16 hours ago - 5 days 16 hours ago #1608 by dynamics
WDM-INOP was created by dynamics
What does "INOP" in rectangle mean in the wiring diagram?
Last edit: 5 days 16 hours ago by dynamics.

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5 days 15 hours ago #1609 by OG GarlicSalt
Replied by OG GarlicSalt on topic WDM-INOP
Would like to see it here to be for sure but to me sounds like the triangle (a flag) is showing that a component is inop at time of installation. You will see these or similar alot of STC or engineering drawings for new installations as components will he installed wired up tested but then be INOP or unusable until final approval from authorities. Then revision will be made and inop flag removed.

Could be other reasons but that's the only one I can think of.

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5 days 15 hours ago - 5 days 12 hours ago #1610 by dynamics
Replied by dynamics on topic WDM-INOP
See attached print.

Mark's note: I cannot show a complete Boeing print on the site. I've removed yours and inserted two smaller screenshots.....
  
  
 
  
  
 
  
 
Last edit: 5 days 12 hours ago by Mark.

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5 days 14 hours ago #1611 by OG GarlicSalt
Replied by OG GarlicSalt on topic WDM-INOP
Yeah it's disabled inop because C/B collared.

Never personally seen a 737 with airstairs i have seen some BBJ and other wide body equipped with them as option or Modification after the fact.

Probably disabled because they no longer need it or want to maintain it.

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5 days 14 hours ago #1613 by dynamics
Replied by dynamics on topic WDM-INOP
Does it mean the corresponding wires are capped?

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5 days 14 hours ago #1614 by OG GarlicSalt
Replied by OG GarlicSalt on topic WDM-INOP
No the C/B are pulled with a permanent collar usually red.
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5 days 14 hours ago #1615 by dynamics
Replied by dynamics on topic WDM-INOP
How can I verify that the corresponding wire is capped off?

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5 days 13 hours ago - 5 days 13 hours ago #1617 by Mark
Replied by Mark on topic WDM-INOP
The print doesn't ask for it to be capped off. Just the collar.

A capped wire is shown as.....
  
     
 
Last edit: 5 days 13 hours ago by Mark.
The following user(s) said Thank You: dynamics

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5 days 8 hours ago #1618 by dynamics
Replied by dynamics on topic WDM-INOP
Would you mind spelling out why WDM asks for INOP label whereas the wires are not capped off and so the airstair may be serviceable.

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5 days 8 hours ago #1619 by OG GarlicSalt
Replied by OG GarlicSalt on topic WDM-INOP
With the diagram you have shown the airstairs are deactivated most likley by operator request. Either they aren't using them to costly to maintain or any combination of those to.

Deactivation through pulling the CB and applying permanent collar is much easier(cheaper) for MX and also makes reactivation easier if they decide to go that route.

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