The Air Force committed $87.4 million to low-rate initial production of Northrop Grumman's AN/ALQ-257 Integrated Viper Electronic Warfare Suite for F-16 fighters. Production of 72 upgraded Block 50 aircraft at the Illinois facility will conclude by end of 2029, ahead of full-rate production for a 450-aircraft fleet.
What's happening
- Air Force awarded $87.4 million LRIP contract modification to Northrop Grumman, bringing total IVEWS program value to $1.92 billion.
- Initial production batch covers 72 Block 50 F-16s fitted with the AN/ALQ-257 electronic warfare suite at Illinois facility, scheduled completion by end of 2029.
- IVEWS has logged over 550 hours of effective testing across 300 sorties during operational assessments as of mid-2026.
- Full-rate production to follow initial tranche for remaining 450-aircraft fleet.
Why it matters
- Fielding AN/ALQ-257 capability maintains F-16 competitiveness against peer adversaries with advanced radar and electronic warfare systems.
- Single-aircraft autonomous geolocation and active jamming without disabling sensors increases pilot survivability in contested airspace.
- LRIP funding accelerates transition from operational need statement issued in 2025 to production, addressing Central Command priority for Middle East operations.
- Northrop must sustain Illinois production capacity and supply chain for 72 aircraft delivery over three-year window, then scale for full fleet.
Going deeper
- IVEWS integrates ultra-wideband radar warning, active jamming, and threat detection with AN/AG-83 Scalable Agile Beam Radar using Active Electronically Scanned Array.
- System complies with Air Force Big Iron software standard, enabling rapid updates without hardware modifications or extended aircraft downtime.
- Congress provided $187 million in fiscal 2026 reconciliation bill to accelerate system qualification and flight testing after CENTCOM urgent operational need statement.
Financial impact
- Northrop recognizes $87.4 million obligated funds against LRIP contract in 2026, with revenue recognition phased across aircraft deliveries through end of 2029.
- Ceiling contract value of $1.92 billion total program represents backlog expansion; revenue cadence depends on 72-aircraft production schedule over three years.
- Illinois facility capital and labor costs will front-load in 2026-2027 during LRIP phase; gross margin profile depends on final unit production rates and supplier pricing.
The intrigue
- Air Force will evaluate IVEWS integration into potential future F-16G new-build purchases, creating potential expansion path beyond current 450-aircraft full-rate target.
- Pace of full-rate production initiation depends on success metrics from 72-aircraft LRIP batch and Central Command operational feedback, introducing schedule risk.
The fine print
- Contract value of $87.4 million is obligated LRIP modification; total $1.92 billion program value includes prior development and planned full-rate production, not yet fully obligated.
- Timing reflects LRIP completion by end of 2029; full-rate production schedule and delivery cadence for 450-aircraft fleet not yet disclosed.

