Originally Posted by
BOAC
LW_50 - Indeed not - it is, I think, simply designed to allow altitude change, but we know the crew was well confused with modes etc. as shown by the selection of it with a higher altitude selected BUT I still argue that msr would be a good idea whatever it is being used for.
(my bolding)
No the function is as it says there for Flight Level Change. This was used several times in the NTSB questions.
(NTSB): Captain Cashman, why no auto thrust protection in flight level change mode?
and
(NTSB): Given that, the situation when the flight level changes and the autothrottle is on hold, do you consider that to be an error-tolerant design?
The response should have been - that the function is there, as you have just stated, for '
Flight Level Change' it is not there for use below the Transition Level. The function was being misused by the crew.