Ordinarily, Social Security's earnings records display a "C" for a covered quarter, that is, a quarter with sufficient earnings for the claimant to be credited with coverage for that quarter, or an "N" for a quarter where the claimant lacks sufficient earnings to be credited with a quarter of coverage. I've just seen an earnings record with a bunch of quarters labeled "F." No dollar figures for earnings are displayed for these years. There are signs that this earnings record was confusing Social Security employees as well and that the quarters were treated as covered quarters.
These are recent quarters. The claimant says he had an unremarkable job with a hospital in North Carolina. We don't have any state or local government employees in NC who aren't covered by F.I.C.A.
Can anyone advise me on what these quarters represent?