It's the govt limiting not USAir
Couple of Facts to straighten out the pension mess. Keep in mind these only apply to defined benefit plans and the rules have been generalized.
1) No company can ever reduce someone's ACCRUED pension benefit. If you've earned it and are vested it is yours.
2) A company can only reduce future benefit accruals.
3) The assets for the pension are a separate legal entity and cannot be used by the company in any way until the plan is terminated.
4) A company can terminate a pension at any time. When this happens the assets are checked to see if they can cover the plan's liabilities. If they can, then all benefit accruals are frozen and the assets are used to pay out the liabilities with the company keeping the difference (of course they are taxed heavily on this).
If the plan does not have enough assets, then the PBGC steps in and the plan's liabilities are broken down into six categories. The first category's liabilities are measured and the assets are used to pay out these liabilities (I believe the first category is existing retirees). It then moves on to the second/third/fourth until the assets are exhausted.
What the pilot's union is stating about benefits being cut is that the PBGC limits benefit amounts (and negotiated benefit increases within the last 5 years) in the first active category to $44,000/yr. If this category is covered by the assets, then the participant's total benefit is prorated by the remaining asset pool.
Thus if an active pilot has an accrued $80,000/yr benefit he may only receive $44,000. This is the "cut" that the current articles are talking about. It is the govt cutting the benefit. Even if the pension wasn't terminated, in bankruptcy, the govt could step in at any time at force the plan to terminate.
Of course this is only for defined benefit plans. Defined contribution plans (401k's, etc) have no protection. It's hard to feel sorry for those pilots who will earn only $44,000/yr when people at Enron received nothing.