An able airman with a disqualify-. ing diagnosis, after FAA review, is given. a letter that permits any Aviation Medi-. cal Examiner to certify after reviewing. the pilot's current medical status, with-. out involving the bureaucracy.
Normal Lung Sounds. Normal breath sounds are classified as tracheal, bronchial, and vesicular sounds. The patterns of normal breath sounds are created by the effect of body structures on air moving through airway. Normal lung sounds can be considered abnormal when the sound occurs in an area in which the sounds should not be present.
Posted by Dr. Chris. Tweet. Abnormal breathing sounds differs in quality from the normal hollow, rustling sound that is heard as air passes through the large airways like the pharynx, larynx and trachea (bronchial breathing) and resonates in the bronchial tree and lungs (vesicular breathing).