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  1. #1
    150+ Forum Groupie Goldmember's Avatar
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    737 MIP outside lighting

    This question is not about backlighting the MIP but about the light sources that light the front of the MIP.
    - I know there's a light bar (or led strip) under the MCP. Is this always on or only when it's dark?
    - If so, does it switch on automatically or do you have to do it yourself?
    - Are there other light sources that illuminate the MIP?
    - Should the lighting be regulated?

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    150+ Forum Groupie choffmann's Avatar
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    The LED strip under the MCP is regulated and dimmed by the AFDS flood light knob on the lighting panel below the MIP on the cpt side, next to the CDU.
    There is another LED strip to light the MCP under the MCP cover.
    The backlighting of the MIP is regulated by another knob on the lighting panel.
    Zoom in this pic http://cdn-www.airliners.net/aviatio.../2/1490209.jpg
    to see what I mean.

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  4. #3
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    There are two light stips underneath each glare wing. The captain regulates the brightness of these lights with the BACKGROUND knob below the PFD/ND displays. He also regulates the light strip above the MCP (the one that lights up the front of the MCP from above) with the AFDS FLOOD light. The MAIN PANEL knobs are used for adjusting instrument lighting and the backlighting. The captain side one regulates captain side and center part. The F/O is allowed to regulate his panel by himself.

    The lights can be turned off, or adjusted gradually to full power. The lights are powered from AC bus #2. Should AC BUS #2 fall out, the lights uses AC STANDBY at a fixed lower intensity.

  5. #4
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    Here's an image of the glare wings. You can see the groove where the light strip goes:

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  7. #5
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    While we're discussing cockpit lighting - there are two lights available for each pilot (meaning each pilot has two lights of his own), one on the side of the overhead panel, inside the innermost eyebrow window groove, and one on the side wall. They are controlled on the triangular-shaped panel on the sidewall.
    The hole in the overhead (trapezoid shaped), center aft position on the forward overhead, illuminates the pedestal. There are also two dome lights for general lighting (controlled by a two-way switch on the aft overhead) and lights that lights up the circquit breaker panels. Don't know where the switch for the C/B panel lights is located though...

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  9. #6
    150+ Forum Groupie choffmann's Avatar
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    wow vidarf, that is precise info!
    Which knob regulates the OVHD flood light (in the trapezoid hole)? There is a flood light knob on the pedestal, is that the one?

  10. #7
    2000+ Poster - Never Leaves the Sim Michael Carter's Avatar
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    If AC power fails, is power for these lamps routed through a TR from the Standby DC or Hot battery Buss? Or will they function on straight DC from the battery buss?

    Inquiring 727 minds want to know.
    Boeing Skunk Works
    Remember...140, 250, and REALLY FAST!

    We don't need no stinkin' ETOPS!



    Powered by FS9 & BOEING

  11. #8
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    The FLOOD lights knob on the pedestal controls the "trapezoid lamp". The PANEL knob on the same panel controls the pedestal panel backlighting.

    Should you loose all AC power, these lights are available through the battery bus:
    Standby compass, dome lights, background instrument flood lights (the light strips we discussed earlier, as far as I can figure it out), selected information and warning lights (dunno which ones).

    As a side note: If an engine is running and the cockpit door opens, the forward entry lights (just outside of the cockpit) dims down automatically.

    While on the lower part of the MIP: The FOOT AIR control supply airconditioned air to the pilot's leg position. Also known as FOR, or Foot Odour Remover. Sometimes also used as FQR (Fart Quick Remove).
    The WIND SHIELD AIR passes conditioned air to the no.1 L and no.1 R windows. Used to assist window heat, or if window heat is lost.

    All this info can be found in Bill Bulfer's Cockpit companion (just google it). If you're building a 'pit, order that one!!!

  12. #9
    2000+ Poster - Never Leaves the Sim Michael Carter's Avatar
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    You are Da' Man! Thanks!
    Boeing Skunk Works
    Remember...140, 250, and REALLY FAST!

    We don't need no stinkin' ETOPS!



    Powered by FS9 & BOEING

  13. #10
    "While on the lower part of the MIP: The FOOT AIR control supply airconditioned air to the pilot's leg position. Also known as FOR, or Foot Odour Remover. Sometimes also used as FQR (Fart Quick Remove)"

    Had to change one the other night. What a pain in the arse. Boeing literally build the mip around the cable... well at least it seems that way anyway I still have the old knob so if anyone wants it let me know.

    Gary

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