14 CFR 170.25 - LORAN-C discontinuance criteria.
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A LORAN-C nonprecision approach may be subject to discontinuance when the present value of the continued maintenance costs (PVCM) of the LORAN-C approach exceed the present value of its remaining life-cycle benefits (PVB):
PVB/PVCM < 1.0
Title 14 published on 2014-01-01
no entries appear in the Federal Register after this date.