The following conditions of the ear are causes for rejection of membership:

(1) Auditory canal:

(a) Atresia or severe stenosis of the external auditory canal;

(b) Tumors of the external auditory canal except mild exostoses;

(c) Severe external otitis, acute or chronic;

(2) Auricle: Agenesis, severe; or severe traumatic deformity, unilateral or bilateral;

(3) Mastoids:

(a) Mastoiditis, acute or chronic;

(b) Residual or mastoid operation with marked external deformity which precludes or interferes with the wearing of a gas mask or helmet;

(c) Mastoid fistula;

(4) Meniere's syndrome;

(5) Middle ear:

(a) Acute or chronic suppurative otitis media. Individuals with a recent history of acute suppurative otitis media will not be accepted unless the condition is healed and a sufficient interval of time subsequent to treatment has elapsed to insure that the disease is in fact not chronic;

(b) Adhesive otitis media associated with hearing level by audiometric test of 20 db or more average for the speech frequencies (500, 1000, and 2000 cycles per second) in either ear regardless of the hearing level in the other ear;

(c) Acute or chronic serous otitis media;

(d) Presence of attic perforation in which presence of cholesteatoma is suspected;

(e) Repeated attacks of catarrhal otitis media; intact greyish, thickened drum(s);

(6) Tympanic membrane:

(a) Any perforation of the tympanic membrane;

(b) Severe scarring of the tympanic membrane associated with hearing level by audiometric test of 20 db or more average for the speech frequencies (500, 1000, and 2000 cycles per second) in either ear regardless of the hearing level in the other ear;

(7) Other diseases and defects of the ear which obviously preclude satisfactory performance of duty or which require frequent and prolonged treatment.