Sikorsky Aircraft Corp., Stratford, Connecticut, is awarded $65,664,353 for a not-to-exceed, undefinitized contract action delivery order (N00383-23-F-X951) under previously awarded contract N00383-20-G-X901 for the procurement of six AI gearbox assemblies and six input module gearboxes in support of the CH-53K aircrafts. All work will be performed in Stratford, Connecticut. This contract contains no options and work is expected to be completed by March 2027. Annual working capital funds (Navy) in the amount of $49,248,265 will be obligated at the time of award. Funds will not expire at the end of the current fiscal year. One company was solicited for this sole-source requirement pursuant to the authority set forth in 10 U.S Code 2304 (c)(1), with one offer received. Naval Supply Systems Command Weapon Systems Support, Philadelphia, Pennsylvania, is the contracting activity.