TURIN
I do not know about NAPS 2 but in NAPS 1 pilot's pensionable pay is, at the moment, 80% of the LH Pay Point 24 scale minus a sum equivalent to 1.5 times the current single person's basic State Pension (the reduction for 2006-2007 is £6,552).
The idea of reducing the pensionable pay is that this portion of pay is already pensioned through the Basic State Pension. So there is no need for the employee nor British Airways to pay pension contributions on this portion of pay.
In the proposed deal pilot's pensionable pay will be 95% of the LH PP24 scale minus the above abatement.