What does it mean?
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Join Date: Dec 2003
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What does it mean?
I give up!! 20 years of sitting in Boeing flight decks, it has finally got the better of me. What does the white plus sign ("+") on all the selector panels, signify?
Cockpit Door-Closed
Cockpit Door-Closed
Moderate, Modest & Mild.
I was reliably informed 
that they are marks used during manufacture to accurately align the panel hole cutters (for the instrumentation, etc).
Next please!
that they are marks used during manufacture to accurately align the panel hole cutters (for the instrumentation, etc).Next please!
Not just Boeing, Bombardier have the same thing. My understanding is the same as The_Cutest_of_Borg
, but we may be wrong.
In relation to the +, if it is the location of the wiring loom to the panel why do we(Pilots) need to know? Could it be the spot to make a "technical tap" if required
which could make Capt Claret's version more likely.
I like your version Kaptin M but I would have thought that the more modern panels would be produced in a mass 'jig' with mega accurate laser cutters.
Next
.
, but we may be wrong. In relation to the +, if it is the location of the wiring loom to the panel why do we(Pilots) need to know? Could it be the spot to make a "technical tap" if required
which could make Capt Claret's version more likely.I like your version Kaptin M but I would have thought that the more modern panels would be produced in a mass 'jig' with mega accurate laser cutters.
Next
.
Last edited by hoss; 10th Dec 2003 at 19:23.
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The cross shows where the lighting panel connector is, it is usually a small round plug almost like a tv aerial plug in shape but about half the size which has a corresponding socket on the overhead panel chassis. Shows you where to press to ensure it has mated after you have had the panel apart.
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The truth is...
Actually, it is where the wiring loom/cannon plug/ earth connection is. Not just for the backlighting necesarily but sometimes the gauge itself. Yes, because the panels do flex, you are supposed to press in that area after installation to assure a firm seat, and yes you can press on that part if the gauge doesn't work or the backlighting goes out.
Source was Boeing.
Source was Boeing.
They also exist in Airbus aircraft as well. The only difference is they are blue and can sometimes be difficult to see. I asked a ground engineer what they were once and he informed me that that is the place you hit (tap) when the lights in that panel go out.
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Oral exams...
E-mail me with any questions on B-737/57/67. I used to do company orals on the 75/76. Sometimes we had to dig pretty deep to satisfy that "one guy" in every class.
