Aviation System Modification Support 2019

The Department of the Army Acquisition Support Center PEO Aviation awarded a Master IDIQ for Aviation System Modification Support on May 8, 2019, with a $2.44 billion combined ceiling, but ordering closed on May 8, 2024—the vehicle is no longer active. The IDIQ supported engineering, logistics, maintenance, training, and modification services for Army aviation platforms and equipment managed by AMCOM, primarily CH-47F and UH-60M cargo and utility helicopters.

Eighty-eight task orders have been awarded since vehicle inception, with 88 percent of combined potential value obligated ($520.5 million of $594.4 million). Recent ordering momentum declined sharply: the vehicle averaged 10–12 orders annually from 2021–2023, dropped to 9 in 2024, and has issued only 3 in 2025. The most recent award occurred in June 2025, more than one year ago.

Competition is highly concentrated among three primes. Science and Engineering Services, LLC dominates with 53 orders and $415.3 million potential value—roughly 70 percent of the entire vehicle. Tyonek Worldwide Services Inc. holds 20 orders and $113.6 million; Y-Tech Services, Inc. holds 15 orders and $65.5 million. No other contractors appear on the vehicle.

Customer concentration is also high: PEO Aviation itself funded 65 of 88 orders ($498.3 million), accounting for roughly 84 percent of potential value. Army Materiel Command Aviation and Missile Life Cycle Management Command placed 11 orders ($15.3 million), and Army PEO Intelligence, Electronic Warfare & Sensors placed 11 orders ($79.6 million).

About 66 percent of orders carry no set-aside; 34 percent are Total Small Business set-asides. Task-order values span a wide range—from thousands of dollars for studies and kits to several million dollars for integration programs, system support packages, and fielding operations. Notable recent awards include a CH-47F CIRCM A-kit order to Y-Tech ($4.7 million, December 2024), an aviation ground support equipment order to Tyonek ($48.9 million ceiling, June 2024), and a unit material aerial recovery kit order to Science and Engineering ($9.6 million ceiling, February 2024). A single large order—UAE CH-47F fielding support to Science and Engineering—obligated $83.6 million at Cost Plus Fixed Fee pricing.

Place of performance centers on the Redstone Arsenal area in Alabama, with subordinate work worldwide supporting foreign military sales cases and international programs across Europe, the Middle East, and Asia-Pacific.

Master IDIQ to support modifications to aviation systems owned or supported by the Program Executive Office (PEO) Aviation, Army Materiel Command (AMC)/Aviation and Missile Command (AMCOM).