HON · News · 20260923N

Product Launch and Transition

HONEYWELL INTERNATIONAL INC · 2026-09-23 · Importance 46 · Surprise 66 · In source text

Honeywell Aerospace introduced the P40 upgrade for the F-35 Power and Thermal Management System, increasing cooling capacity from 32 to 40 kilowatts, or 25%. The software and liquid-cooling improvements do not require airframe modifications and are intended to reduce non-resettable in-flight shutdowns while improving aircraft reliability. The upgrade is expected to enter service in 2029–2030, integrate during scheduled maintenance, remain compatible with existing support infrastructure, and provide a pathway toward more than 62 kilowatts of future thermal capacity.

Key facts

• Honeywell Aerospace introduced the P40 upgrade for the F-35's power and thermal management system, boosting cooling capacity by 25%. source
• Honeywell's 40-kilowatt P40 system is expected to be in service between 2029 and 2030. source
• Honeywell's P40 upgrade supports future capacity increases up to 62 kilowatts. source
• Honeywell described the P40 as a first step in a phased modernization plan to reach over 62 kilowatts. source
• Honeywell said the P40 upgrade is designed for seamless integration during scheduled maintenance to make it easier for operators to implement. source
• Honeywell said the P40 upgrade maintains compatibility with existing support infrastructure. source
• The P40 upgrade increases F-35 cooling capacity from 32 kilowatts to 40 kilowatts. source
• Honeywell's P40 upgrade boosts cooling capacity through software and liquid-cooling improvements without requiring airframe changes. source

Impact estimates