Section 243(5B) in The Navy (Pay And Allowances) Regulations, 1966
(5B)An officer, who is sent on deputation for a period exceeding 12 months out of India or is transferred to a post abroad before an advance drawn by him in India for the purchase of a motor car is completely repaid by him, may, at his option, he allowed by the sanctioning authority to repay the remaining instalments in rupees in India. The officer should arrange to remit the amount due by hank draft, by the