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Altitude alert above FL100 (Read 653 times)
Abcdeflijus
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Altitude alert above FL100
Jan 22nd, 2021 at 3:01pm
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Hello Captains,

I started to experience strange thing with 737-200.
For example I was assigned by ATC to climb and maintain 5000 after take of. Later on it clears me for FL230, so I adjust my altitude alert for that and start climbing. But after 10000 ft. I keep getting continuous altitude alert buzzer. If I drop it down to below 10000 and reset back to FL230 it stops. I couldn't find anything in the manuals about it. Is this some king of bug I am experiencing, or I am doing something wrong with climb configuration?  Roll Eyes
Anyone else has experience the same symptoms?

Regards, Viktor.
  
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Markoz
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Re: Altitude alert above FL100
Reply #1 - Jan 23rd, 2021 at 12:04am
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It might be the cabin air pressure warning that you're hearing (the warning horn starts when you reach 10,000ft). Make sure the Engine Start Switches are in the OFF position.
  

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Abcdeflijus
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Re: Altitude alert above FL100
Reply #2 - Jan 25th, 2021 at 3:31pm
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Yes Markoz, you were right.
That sound is cabin pressurization. But that was not engine switches not in off position, it was A/C pack switches left off, after engine start. Sometimes I am skipping some check lists and here we have consequences  Roll Eyes
  
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