RTX · News · 20260915N
F135 Engine Upgrade Milestone
RTX Corp · 2026-09-15 · Importance 31 · Surprise 42 · In source text
Pratt & Whitney completed the F135 Engine Core Upgrade Risk Reduction Design Review on September 15, 2026. The review validated design maturity and advances the program toward production. The upgrade is intended to provide enhanced power and thermal management for F-35 Block 4 and later aircraft, supporting fleet modernization over the coming decades.
Key facts
- The RRDR completion validates the design's maturity and advances the F135 ECU program toward production. source
- Pratt & Whitney, an RTX business, has successfully completed the F135 Engine Core Upgrade (ECU) Risk Reduction Design Review (RRDR). source
Impact estimates
| metric | direction | stage | expected | basis |
|---|---|---|---|---|
| revenue | positive | probable | — | The RRDR completion validates the design's maturity and advances the F135 ECU program toward production. |