Medical Examination Standards for Airmen Article 36
The standards for hearing acuity examinations are as follows: the unaided hearing acuity of each (right and left) ear, shall demonstrate the ability to hear the 40 dB or less of a signal at the frequency of 500, 1000 or 2000 hertz (cycles per second) and to hear the 50 dB or less of a signal at the frequency of 3000 hertz (cycles per second).
中文原文 航空人員體格檢查標準第36條
聽力檢查標準如下：左右耳不用助聽器收聽五百或一千或二千赫頻率之信號時，聽力應在四十分貝以下，在收聽三千赫頻率之信號時，聽力應在五十分貝以下。