RSA 102:18 Ordinary Disability; Medical Examination.

I. Upon the application to the retirement board of a member in active service, any member who has 15 or more years of creditable service may be retired on an ordinary disability retirement allowance consisting of an annual sum equal to 2/3 his average final salary as defined in RSA 102:15; provided that the physician or physicians designated by the board certify that he is mentally or physically incapacitated for the further performance of duty, that such incapacity is likely to be permanent, and that he should be retired.
II. Once each year during the first years following the retirement of a member on a total and permanent disability, or ordinary disability retirement, and once in every 3-year period thereafter, the board may require any disability beneficiary, who has not a