F-35I Adir (Israeli F-35)
BLUF
The F-35I Adir (“Mighty One”) is Israel’s customized variant of the Lockheed Martin F-35A Lightning II, operated by the Israeli Air Force (IAF). Israel is unique among F-35 operators in receiving US authorization to integrate its own domestically developed electronic warfare systems, sensors, and avionics into the airframe — creating a platform that exceeds the standard F-35A in electronic warfare capability and interoperability with Israeli C4ISR architecture. The Adir was the IAF’s primary penetrating strike platform in the 2026 Iran campaign (Strategic analysis on Iran conflict), enabling suppression of Iran’s S-300PMU-2 and Bavar-373 integrated air defense through low-RCS penetration and stand-off jamming.
Technical Specifications
| Parameter | Value |
|---|---|
| Variant | F-35A with Israeli subsystem modifications |
| Designation | F-35I “Adir” |
| Manufacturer | Lockheed Martin (airframe); Israeli defense industry (subsystems) |
| Role | Multi-role stealth strike, SEAD, air superiority |
| Max speed | ~Mach 1.6 |
| Combat radius | ~1,100 km (unrefueled) |
| Payload | 8,000 kg (internal + external); stealth mode: internal weapons only |
| Radar | AN/APG-81 AESA (US); Israeli EW suite integrated |
| RCS | Very low (~0.001 m²) |
| Israeli fleet | ~75 aircraft as of 2026 (3 squadrons active); +1 squadron ordered 2026-05-03 |
| Procurement target | 100 F-35Is (4 squadrons) + 50 F-15IAs (2 squadrons) per 2026 Ministerial approval |
Israeli Modifications
Israel’s modifications (exact specifications classified) are understood to include:
- Indigenous EW systems: Upgraded electronic warfare and jamming suite, reportedly superior to the standard F-35A EW package in contested environments
- Helmet display integration with Israeli C4ISR networks
- Weapons compatibility: Israeli air-to-air missiles (Python-5, Derby) and air-to-ground munitions (Spice-2000, Rocks) certified for internal carriage
- Datalink integration: Interoperability with Israeli satellite communications and IAF battle management networks
Operational Use — Iran 2026
In the Strategic analysis on Iran conflict, the F-35I Adir played a decisive role in the opening SEAD campaign (Operation Roaring Lion). Coalition strikes achieved an 80% neutralization rate of Iran’s surface-level IADS in the opening hours, with the Adir’s low RCS enabling penetration of the Bavar-373’s detection envelope before Iranian radar operators could establish valid firing solutions.
Key Connections
- Strategic analysis on Iran conflict — primary operational deployment; SEAD campaign
- Israel Defense Forces — operator
- Israel — procurement and operational authority
- Iron Dome — companion defensive layer in integrated IAF force structure
- Iron Beam — next-generation directed-energy complement
- Project Maven and Kill Chain Compression — F-35I sensor fusion feeds into AI-assisted targeting architectures
- IRGC Quds Force — primary adversary target set in 2026 campaign
Procurement Update — 2026-05-03
Israel’s Ministerial Committee on Procurement approved simultaneous acquisition of one additional F-35I Adir squadron and one F-15IA squadron. MoD Director General authorized the US-based procurement delegation to sign deals “in the near future.” Estimated cost: “tens of billions of shekels” including integration, support, and logistics. Rationale cited by Defense Minister Katz: operational lessons from Operation Lion’s Roar (US-Israeli strikes on Iran, Feb 28 – Apr 8, 2026). The procurement signals that the Iran campaign exposed IAF capacity ceilings despite tactical success, driving force expansion rather than consolidation.
PM Netanyahu also announced a parallel domestic program to develop “groundbreaking Israeli-made aircraft” — assessed as Collaborative Combat Aircraft-type loyal-wingman drones or the classified RA-01 ISR/strike drone rather than a manned fighter, given timeline and cost constraints. (Assessment — Medium.)
Source: The War Zone, 2026-05-03 — [primary, defense specialist press]
Sources
- IISS Military Balance (2024, 2025) — [High confidence]
- Israeli MoD official procurement announcements — [High confidence]
- The War Zone, “Israel To Buy Extra F-15IA and F-35I Squadrons” (2026-05-03) — [High confidence, primary defense press]
- Aviation Week / Breaking Defense technical reporting — [Medium confidence]
- Strategic analysis on Iran conflict — vault primary