Hi guys, great airplane, but I'm having some troubles with the Cabin Pressurization Panel.Although I'm following the PMDG 737 Cold & Dark to Secure Check List, every time after takeoff this happens: I have no idea what I'm doing wrong and how I can resolve this issue, I appreciate any sugestions. Thanks

Is that knob lower right in the circle set to auto?You also need to switch on the bleed air switches for each engine. FRED

Same thing here... The bleed air switches are both on.

I am also getting this problem but not on every flight, so I just assumed I wasn't doing something correctly .... Clearing the failure on the fly via the FMC doesn't work either :(

OP, your engine bleed air is off. Packs also need to be on.

Engine Bleeds ON, APU Bleed OFF, ISOL Valve AUTO and still get it here. So if I can't set the LDG ELEV, I assume the IAAA HGS will not effectively work either ?

On the air panel all switches must be in the on or auto position (including packs James) apart from the APU bleed which should be off when the APU is not running, if you don't do this then the engine pneumatic system cannot provide the air pressure to pressurise the cabin. As can be clearly seen in the image at the top of this thread the engine bleeds are off.

So if I can't set the LDG ELEV, I assume the IAAA HGS will not effectively work either ?

HGS runway length and elevation are set on the HGS control panel on the radio pedestal.

Checklist- Before Take-off set the cruising altitude into the pressurisation panel and set the panel to auto- Engine Bleed AUTO- Packs AUTO- Recirc Fans AUTO That should work!! EDIT: Sorry, Engine bleed to ON, thanks Andy! ;)

Edited August 14, 201114 yr by Bombayduck

There is no such thing as Engine Bleed Auto.

There is no such thing as Engine Bleed Auto.

Sorry, I meant Engine bleed to On My mistake ^^

I had everything set up correctly, but I got the FAIL message too. Looked it up in the QRH => followed the published procedure, afterwards switched back to auto and everything was fine! :-)

So what did you forget? And guys you can set the press. system on the ground with no bleed air set to on!