(a) Issuance.--As evidence of the indebtedness authorized, limited obligation bonds of the Commonwealth payable solely from the Aviation Development Account may be issued from time to time for such terms and conditions of issue, redemption and maturity, rate or rates of interest and time of payment of interest, as the Governor, Auditor General and State Treasurer shall direct, except that the latest stated maturity date shall not exceed ten years from the date of the bond first issued for each series.(b) Signatures.--All bonds issued under this chapter shall bear facsimile signatures of the Governor, Auditor General and State Treasurer, and a facsimile of the Great Seal of the Commonwealth of Pennsylvania, and shall be countersigned by one authorized officer of the authorized loan and transfer agent of the Commonwealth.(c) Limited obligation of Commonwealth.--All bonds issued under this subchapter shall not be deemed to pledge the full faith and credit of the Commonwealth but shall be limited obligations of the Commonwealth, payable solely from the Aviation Development Account, which is hereby pledged to the extent necessary for the payment of the interest thereon as it becomes due and the payment of the principal thereof at maturity. All bonds issued under this subchapter shall be exempt from taxation for State and local purposes. The principal of and the interest on the bonds shall be payable in lawful money of the United States of America.(d) Type of bonds.--The bonds may be issued in certificate or book-entry form as the issuing officials may determine.(e) Amortization and retirement.--The issuing officials shall provide for the amortization of the bonds in substantial and regular amounts over the term of the debt. The first retirement of principal shall be stated to mature prior to the expiration of a period of time equal to one-tenth of the time from the date of the first obligation issued to evidence the debt to the date of the expiration of the term of the debt. Retirements of principal shall be regular and substantial if made in annual or semiannual amounts whether by stated serial maturities or by mandatory sinking fund retirements computed in accordance with either a level annual debt service plan, as nearly as may be, or upon the equal annual maturities plan.(f) Printing.--The Governor, Auditor General and State Treasurer shall proceed to have the necessary bonds prepared and printed. The bonds, as soon as they are prepared and printed, shall be forthwith deposited with the duly authorized loan and transfer agent of the Commonwealth, there to remain until sold in accordance with the provisions of this subchapter.1984, Oct. 10, P.L. 837, No. 164, § 1, imd. effective.