Originally Posted by
jerry a. laska
I don't believe this is correct Gardyloo. Tier points and 4BA segments do not reset as you move up the tiers they only reset at the end of your membership year.
Also the requirement that the 4 segments be BA metal has also been changed and BA flight numbers on other metal also count towards the requirement.
From ba.com:
I stand (happily) corrected - I guess the four flights per tier move was eliminated when Avios appeared.
On your second point, I'm not so certain - here's the language from the BAEC T&Cs:
In order to achieve or retain Silver or Gold status Members must ensure they take at least four flights operated by British Airways each Year in addition to obtaining the required number of Tier Points.
(My bold.)
Still, it's a far easier threshold than it used to be. However, I think the definition for "eligible flights" you cite that includes IB is what would be counted to make status by segment count, not tier points.