Would seem very strange if true. Without wishing to sound rude, you may be getting a little confused or someone has fed you some duff gen!
What if you're high on profile?
(What.....me?!
) Open descent with speedbrakes is
the most effective means for losing height. Providing you havn't set 0000 in the ALT window, the A/C will not fly into the ground. Ironically, with Vertical speed you can fly away from a platform altitude into the ground whereas selecting FLCH would result in the Aircraft flying back
up to the window selected altitude. Besides which,I could never think of a situation in which you wouldn't have an altitude selected in the MCP window anyway! Or Maybe i've been missing some threat for the last 18 years or so?
Now, I could understand if there was a restriction in using a mode such as V/S
above 10,000'.
Harry
Disclaimer.
The above information is based on current Boeing Aircraft and no information contained herein has any connection with Aircaft manufactured by Airbus. Any similarities are purely coincidental and the Author takes no resonsibility for those that may be unfortunate to be flying such Aircraft at present.
