; and (B) an aviation bonus under subsection (b) may not exceed $35,000 for each 12-month period of obligated service agreed to under subsection (d). (2) Business case for payment of aviation bonus amounts (A) In general The amount of the aviation bonus payable under paragraph (1)(B) under agreements entered into under subsection (d) during a fiscal year shall be determined solely through a business case analysis of the amount required to be paid under such agreements in order to address anticipated manning shortfalls for such fiscal year by aircraft type category. (B) Budget justification documents The budget justification documents in support of the budget of the President for a fiscal year (as submitted to Congress pursuant to section 1105 of title 31) shall set forth for each uniformed service the following: (i) The amount requested for the payment of aviation bonuses under this section using amounts authorized to be appropriated for the fiscal year concerned by aircraft type category. (ii) The business case analysis supporting the amount so requested by aircraft type category. (iii) For each aircraft type category, whether or not the amount requested will permit the payment during the fiscal year concerned of the maximum amount of the aviation bonus authorized by paragraph (1). (iv) If any amount requested is to address manning shortfalls, a description of any plans of the Secretary concerned to address such shortfalls by non-monetary means. (3) Lump sum or installments A bonus under this section may be paid in a lump sum or in periodic installments, as determined by the Secretary concerned. (4) Fixing bonus amount Upon acceptance by the Secretary concerned of the written agreement required by subsection (d), the total amount of the bonus to be paid under the agreement shall be fixed. (d) Written agreement for bonus To receive an aviation bonus under this section, an enlisted member determined to be eligible for the bonus shall enter into a written agreement with the Secretary concerned that specifies— (1)