Honeywell Military Aircraft Procurement Defense Industry & Major Contractors

Honeywell proposes 25% F-35 cooling upgrade for rollout in three to four years

Honeywell is proposing a P40 upgrade to the Lockheed Martin F-35’s existing power and thermal management system, increasing onboard cooling capacity by 25%. The company says the interim upgrade for the fighter’s overheating electronics could be rolled out in three to four years.

Discovered 2026-09-22T11:35:46.241706-07:00 | 2026-09-22T11:35:46.241706-07:00

Briefing

What Hype is tracking

The proposed P40 upgrade targets the F-35’s overheating electronics by adding 25% more onboard cooling capacity.
Honeywell’s three- to-four-year rollout timeline establishes a potential interim path for addressing thermal-management constraints across the F-35 fleet.
The proposal involves both power and cooling systems, making it relevant to sustainment planning and future aircraft capability upgrades.

Reported By

FlightGlobal Aviation Week insidedefense.com