E195 Cabin Altitude
Join Date: Sep 1998
Location: wherever
Age: 55
Posts: 1,616
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30000 5700 7.6
31000 6000 7.7
32000 6300 7.7
33000 6700 7.7
34000 7000 7.8
35000 7300 7.8
36000 7600 7.8
37000 8000 7.8
38000 8000 8.0
39000 8000 8.1
40000 8000 8.3
41000 8000 8.4
This is the "external" schedule. Used when the CPC reads the cruise altitude from the FMS. It respects the 7.8 below 37000 max diff limitation.
When the CPC doesn't know the initial cruise altitude either because you didn't complete the FMS setup or both FMS have failed then it reverts to "internal" mode which uses a more linear schedule and you will see diff pressure above 7.8 when below 37000.
31000 6000 7.7
32000 6300 7.7
33000 6700 7.7
34000 7000 7.8
35000 7300 7.8
36000 7600 7.8
37000 8000 7.8
38000 8000 8.0
39000 8000 8.1
40000 8000 8.3
41000 8000 8.4
This is the "external" schedule. Used when the CPC reads the cruise altitude from the FMS. It respects the 7.8 below 37000 max diff limitation.
When the CPC doesn't know the initial cruise altitude either because you didn't complete the FMS setup or both FMS have failed then it reverts to "internal" mode which uses a more linear schedule and you will see diff pressure above 7.8 when below 37000.
