Hearing loss in one ear is disqualifying by itself when values exceed 50 dB at 500, 1000, or 2000 Hz (COMNAVMEDCOM ltr 6264 Ser 242/08418035 of 10 JUN 88). PFPA: Uses speech in noise, single speaker, speech at 50 dBHL, noise at 45 dB HL in sound field; may move head as desired. Must achieve 70% or better.