• Air Fixed Wing

    B-52. C-130. F-16. The aircraft that have flown for decades need a supply chain built for decades, not quarters.

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  • Air Rotary/VTOL

    Rotary and VTOL platforms run on tighter maintenance cycles than fixed-wing aircraft, and our kitting and sourcing programs are built around exactly that.

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    Air Rotary

  • Naval Platforms

    From aircraft carriers to submarines, we support naval platforms with proprietary distribution and inventory investment built for sustained readiness.

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    Naval Platform

  • Ground Systems

    Ground systems see the harshest operating conditions in the fleet, and readiness doesn’t wait for a maintenance window.

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    Ground Systems

  • Missile Systems

    We support missile defense systems with engineering and supply chain expertise designed for their unique requirements.

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    Missile Systems

Supporting More Than 300 Platforms Worldwide

Proponent Defense supports more than 300 aerospace and defense platforms across land, air, and sea operations. Our platform-focused approach is built for long-term sustainment and operational readiness, not just one-time parts fulfillment.

Air Fixed Wing

Fixed-wing fleets don’t retire on schedule, and neither does the demand for the parts that keep them flying. Our sustainment work on F-16, C-130, and KC-135 programs is backed by obsolescence mitigation and alternate sourcing, so aging fleets stay mission-capable for as long as they’re needed.

Air Fixed Wing
B-52

B-52

C-100 / KC-130 / KC-135 / KC-46

C-100 / KC-130
KC-135 / KC-46

C-5

C-5

C-17

C-17

F-15

F-15

F-16

F-16

F/A-18

F/A-18

P-3

P-3

Air Rotary/VTOL

From the CH-53 to the broader UH/MH/HH/CH family, rotary and VTOL platforms demand fast turnarounds and dependable parts availability. That’s where our kitting solutions and sourcing expertise carry the most weight, keeping aircraft in the air.

Air Rotary
UH-60

UH-60

MH-60

MH-60

CH-47

CH-47

CH-53

CH-53

AH-64

AH-64

V-22

V-22

Ground Systems

Ground combat systems log hard miles in harsh conditions, making obsolescence mitigation and alternate sourcing a daily requirement. We build long-term sustainment programs designed to extend platform life well past its original production run.

Ground Systems
Abrams

Abrams

Bradley

Bradley

Stryker

Stryker

JLTV

JLTV

Missile Systems

Missile defense systems leave no room for supply chain delay. Engineering and sustainment support behind programs like Patriot, HIMARS, and THAAD is built for mission-critical reliability.

Missile Systems
Patriot

Patriot

HIMARS

HIMARS

THAAD

THAAD

News

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    HC Pacific Rebrands as Proponent Defense at Farnborough International Airshow 2026
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