Skip to content
View in the app

A better way to browse. Learn more.

The AVSIM Community

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

'Master Caution' alarm at FL340

Featured Replies

737-800 NG    

 

KIAD - KMSY:  Yellow flashing alarm started at @ FL340...beeep...beeeep...Alarm usually comes on after reaching Cruz, I think.

 

FMC loads, flaps, etc okay at take off. MCP functional.

 

Unable to locate any red flashing alerts on Main panel or upper panels.

 

Thanks for input.

 

Doug Pelton

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

Did you set the cruise altitude in the pressurization and a/c panel? If not that alarm is for cabin pressurization.

Flyin the great blue skies with the Stream Team Dream Team!

panel-38634201-image-785621faf402a457-32

0.png

Im not a pro, pilot, or an expert on this, but whats the FO Caution panel say? i wonder if its Air Cond... if so you need to check the cruise alt on the overhead. Depending on how i set up, (with FS2Crew) sometimes it doesnt get set, and the plane thinks the cabin should be waaaay lower than i would want it to be.

​Good luck.

​Hope im barking up the right tree for you!!

​Liam Reynolds

Liam Reynolds - EGNS
 

sig_smaller.jpg

             Youtube Channel
  • Author

Did you set the cruise altitude in the pressurization and a/c panel? If not that alarm is for cabin pressurization.

Will double check..thanks!

Im not a pro, pilot, or an expert on this, but whats the FO Caution panel say? i wonder if its Air Cond... if so you need to check the cruise alt on the overhead. Depending on how i set up, (with FS2Crew) sometimes it doesnt get set, and the plane thinks the cabin should be waaaay lower than i would want it to be.

 

​Good luck.

 

​Hope im barking up the right tree for you!!

​Liam Reynolds

Liam, thanks. The FO side wasn't showing any alarms. WIll check other suggested. 

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

Hey Doug,

 

By any chance do you have the crew alertness monitor enabled? Sounds like it could be that. If you press any button in the flight deck it will reset. You can also disable this function in the FMC options.

Darren Klenk

  • Author

Hey Doug,

By any chance do you have the crew alertness monitor enabled? Sounds like it could be that. If you press any button in the flight deck it will reset. You can also disable this function in the FMC options.

Darren...will look at this as well. Thx

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

Hey Doug,

 

By any chance do you have the crew alertness monitor enabled? Sounds like it could be that. If you press any button in the flight deck it will reset. You can also disable this function in the FMC options.

AFAIK, there is no CAM in the NG.  Just the 777.

Oh, totally skipped over the first line in his post in my eagerness to help. Nevermind THE CAM then Doug.

Darren Klenk

  • Author

Im not a pro, pilot, or an expert on this, but whats the FO Caution panel say? i wonder if its Air Cond... if so you need to check the cruise alt on the overhead. Depending on how i set up, (with FS2Crew) sometimes it doesnt get set, and the plane thinks the cabin should be waaaay lower than i would want it to be.

​Good luck.

​Hope im barking up the right tree for you!!

 

​Liam Reynolds

Overhead Altitude display showing only dashed in both displays. Can't enter.

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

So most probably both CPC have gone nuts somehow, therefore you get the cabin alt warning horn.

You need to switch on manual and try to set th cabin pressure by your self or try to switch back to auto. 

Sven Wendel

  • Author

 

 

So most probably both CPC have gone nuts somehow, therefore you get the cabin alt warning horn.

You need to switch on manual and try to set th cabin pressure by your self or try to switch back to auto.

 

I tried both manual ...auto.. Can't input altitude. At Fl340 right now. Turned off the aural alarm from the overhead.

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

Hello, can you post a screenshot of the overhead panel with a close view on the pressurization panel?

Romain Roux

204800.pngACH1179.jpg

 

Avec l'avion, nous avons inventé la ligne droite.

St Exupéry, Terre des hommes.

  • Author

Hello, can you post a screenshot of the overhead panel with a close view on the pressurization panel?

I'll do that tomorrow!  Doug Pelton

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

  • Author

I'll do that tomorrow!  Doug Pelton

Couldn't replicate problem in the air. Started from C&D ...seems the alarm comes on after the APU is on ...engines running....but I forgot to switch on the APU generators. That changed the dashes to numbers in the overhead!  Doug Pelton

"What is the answer to life? Knowing the questions to ask." (Something like that) Gertrude Stein

JetLine Gravity GT-1-- FSX-SE --Windows 10---  Intel 4th Gen Core i5 4690K (4.3GHz Overclock) Quad Core---ASRock Z170 Extreme 4, Intel LGA 1151---Graphics Processor 6GB Nvidia GeForce GTX 1060, PCI Express 3.0; Ev3A Geforce GT 610---System Memory 8GB HyperX DDR3 SDRAM 1866MHz--Corsair Hydro Series H60 Liquid Cooling/600watt Corsair Series---(4) HP 20" monitors---GoFlite MCP - Radios/Eicas

 

 

Overhead Altitude display showing only dashed in both displays. Can't enter.

 

Then you probably forgot to set your cruise altitude in there while still on ground.

Archived

This topic is now archived and is closed to further replies.

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.