Cabin crew staff levels
A recent flight got me wondering about cabin crew staffing levels. There were 6 cabin crew on a pretty full A321 (2.5 hr flight)
By comparison, on a Low Cost A319, there will typically be 3 for a similar sector.
I know the A321 is bigger (30%?), but this doesn't explain the levels. Surely the level of cabin crew is set by the CAA.
I wouldn't imagine the extra sales of coffee and scratch cards could cover the extra staff costs.