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Guest LiamMallon

737 APP MCP button

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Guest LiamMallon

Hi all, Just a quick question. On the MCP I noticed that when my 737 catches the LOC, the APP button light goes out, is this normal? GS is displayed in the HSI along with FD etc etc, but the MCP light is off.

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Hi,Do you have the fraquency tuned to both Nav radios?Both main autopilots selected?


Kevin Hester,

 

Indianapolis, Indiana

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Ms/Mr Nameless,Please sign your posts with your name as per the forum rules.Yes. This is perfectly normal and the extinguishing of the APP light on the MCP tells you that you cannot deselect this mode without anything less than disconnecting the A/P alltogether. The active modes for the A/P and A/T should be read from the FMA at the top of the PFD.Hope it helps,


Mats Johansson
PMDG Flight Test Dept
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As Mats says, it is perfectly normal. Just to add, to "deselect" the APP mode, not only does the A/P have to be disengaged, but you have to turn the FD's off as well.Dinshaw.

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Yep, just to add a little thing, The APP light indicates that the mode is armed and will engage once on the glideslope. After that of course the light goes off.happy landings

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Guest LiamMallon

>Ms/Mr Nameless,>>Please sign your posts with your name as per the forum rules.>>Yes. This is perfectly normal and the extinguishing of the APP>light on the MCP tells you that you cannot deselect this mode>without anything less than disconnecting the A/P alltogether.>The active modes for the A/P and A/T should be read from the>FMA at the top of the PFD.>>Hope it helps,Brilliant thanks, My user name is my name sorry, Sincerely, Liam Mallon

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