| | THE PURPOSE OF THIS MODIFICATION IS TO ADD INCREMENTAL FUNDING TO THE BASE PERIOD. | CONCEPT SOLUTIONS LLC | $18,851,138 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541330Engineering Services | R499SUPPORT- PROFESSIONAL: OTHER | Sep 16, 2025 | Nov 20, 2024 | Nov 19, 2029 |
| | TO 693KA8-25-F-00015_TORFP 2405_ENVIRONMENTAL SERVICES FOR AIRSPACE MODERNIZATION AND INSTRUMENT FLIGHT PROCEDURE CHANGES WITHIN THE FAA SERVICE AREAS | CONCEPT SOLUTIONS LLC | $13,060,521 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541330Engineering Services | R499SUPPORT- PROFESSIONAL: OTHER | Nov 14, 2024 | Nov 14, 2024 | Nov 19, 2029 |
| | AERONAUTICAL MISSION SYSTEMS OPERATIONS AND MAINTENANCE SUPPORT | CONCEPT SOLUTIONS LLC | $39,980,115 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541511Custom Computer Programming Services | R499SUPPORT- PROFESSIONAL: OTHER | Aug 4, 2023 | Aug 4, 2023 | Aug 6, 2028 |
| | TORFP 2211 TECHNICAL AND PROGRAM MANAGEMENT SUPPORT | CONCEPT SOLUTIONS LLC | $18,395,154 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541330Engineering Services | R499SUPPORT- PROFESSIONAL: OTHER | Jul 31, 2023 | Jul 31, 2023 | Jul 31, 2028 |
| | TORFP 2316_MANAGEMENT SERVICES DATA SCIENCE AND ANALYTICS TEAM (DSAT) SUPPORT | CONCEPT SOLUTIONS LLC | $3,825,901 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541330Engineering Services | R499SUPPORT- PROFESSIONAL: OTHER | Jul 20, 2023 | Jul 20, 2023 | Jul 23, 2028 |
| | C3 SUPPORT SERVICES | CONCEPT SOLUTIONS LLC | $70,872,459 | FEDERAL AVIATION ADMINISTRATION | FEDERAL AVIATION ADMINISTRATION | — | 541511Custom Computer Programming Services | R499SUPPORT- PROFESSIONAL: OTHER | Feb 26, 2020 | Feb 26, 2020 | Aug 27, 2027 |