Let's review Part 3 of the Boeing 737 Air systems. Today we will talk about Pressurization system.

We will continue reviewing together the B737 Pressurization system. Please feel free to leave any comments, suggestions and ideas. Hope you enjoy it!
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[@billnelson3732]

Rounding off Landing Airport Altitude.... 204' rounds to 250'? Is it always rounded to the next highest altitude, or the nearest? 204 would be 200. Maybe on the aircraft its different? Just looking for confirmation. Would 755 be 800 or 750? Thanks! Great videos!

[@AviatorLifeCS]

Hi Bill, thank you for your comment. We always round up to the next highest elevation. For instance, Dubai's elevation is 62', we round it to 100'.

[@billnelson3732]

Perfect, I'll start doing that in my sim. Appreciate the reply!

[@spillee]

Nice video, just one question, the CABIN altitude horn together with the red CABIN altitude light; is this accompanied by a Master Caution warning? Thanks

[@AviatorLifeCS]

Hi Spille, that's a great question. Sorry for the late reply. No, we don't get a Master Caution. We only get the Cabin Warning light and the horn. You could get the Master Caution for an AUTO FAIL or OFF SCHEDULE DESCENT (Air System) though. I hope this answers your question. Remember, both, the CABIN ALTITUDE and TAKEOFF CONFIGURATION warnings use the same intermittent tone when activated.

[@spillee]

Hi @@AviatorLifeCS , thanks for the feedback! It completely answers my question. Keep posting those excellent videos! Regards.