(1) The insurer may repay any loan received pursuant to RCW 48.09.320, or any part thereof as approved by the commissioner, only out of its funds which represent such loan or realized net earned surplus. No repayment shall be made which reduces the insurer's surplus below the minimum surplus required for the kinds of insurance transacted.

(2) The insurer shall repay any such loan or the largest possible part thereof when the purposes for which such funds were borrowed have been fulfilled and when the insurer's surplus is adequate to so repay without unreasonable impairment of the insurer's operations.

(3) No repayment of such loan shall be made unless approved by the commissioner. The insurer shall notify the commissioner in writing not less than sixty days in advance of its intention to repay such loan or any part thereof, and the commissioner shall forthwith ascertain whether the insurer's financial condition is such that the repayment can properly be made.

(4) Upon dissolution and liquidation of the insurer, after the retirement of all its other outstanding obligations the holders of any such loan agreements then remaining unpaid shall be entitled to payment before any distribution of surplus is made to the insurer's members.