Originally Posted by
RetiredF4
If i read it correct, it shows a descent rate of 1.800 fpm (number 18 besides the needle)
Yes.
From the FCOM:
The displayed vertical speed information is normally based on both inertial and barometric data. If inertial data is not available, it is automatically replaced by barometric information. In this case, the window around the numerical value becomes amber.
No mention of what is to be displayed when the barometric value is unavailable in the FCOM. I thought BEA wrote something about that in one of its interim reports, but cannot find it at the moment.
Originally Posted by
RetiredF4
Would it look the same and would there be the number 100 for a 10.000 fpm descent rate?
Look the same : almost.
As V/S is > 6000 ft/min (climb or descent):
- the needle would turn amber
- the needle would stay at the end of the scale
As V/S is > 6000 ft/min (climb or descent):
- the analog display would turn amber, too
- no mention (FCOM) of a change of value/scale with this display for 10K ft/min, so I assume it would read 100.