Typical 737NG Cabin Differential Pressures at 16,000 feet?
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Typical 737NG Cabin Differential Pressures at 16,000 feet?
There have been lots of comments on forums on how much more worse Alaska Airlines would have been if the cabin door plug had blown out at cruise altitude. Looking at tables for the 747-400, the differential pressure at 16,000 feet would have already beeen around 2/3rds of the cruise value.
What are the typical pressures for an NG at 16,000 feet? I couldn't find any useful charts/diagrams in the NG Maintenance Manual or online.
Thanks!
What are the typical pressures for an NG at 16,000 feet? I couldn't find any useful charts/diagrams in the NG Maintenance Manual or online.
Thanks!
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There have been lots of comments on forums on how much more worse Alaska Airlines would have been if the cabin door plug had blown out at cruise altitude. Looking at tables for the 747-400, the differential pressure at 16,000 feet would have already beeen around 2/3rds of the cruise value.
What are the typical pressures for an NG at 16,000 feet? I couldn't find any useful charts/diagrams in the NG Maintenance Manual or online.
Thanks!
What are the typical pressures for an NG at 16,000 feet? I couldn't find any useful charts/diagrams in the NG Maintenance Manual or online.
Thanks!
The max differential pressure limit (causing AUTO FAIL) is >8.75 psi, and the controller tries to set the lowest possible cabin altitude based on a schedule of 7.45psid max differential at or below 28,000’, 7.80 between 280 to 370, and 8.35 above 370.
so at 16000 it would been trying to keep sea level pressure in the cabin up to max differential of 7.45psid. Hypothetical max cruise of FL410 would be a cabin alt of 8000 and 8.35psid, which is over 2x the altitude difference between MSL and 16000. It would probably have been much worse to happen at cruise, in my opinion, but I’m just the guy pushing the buttons.