F-35B Completes First Flight Test With MBDA SPEAR 3 Mini Cruise Missile
The UK’s F-35B fleet has completed its first flight test carrying MBDA’s SPEAR 3 mini cruise missile, four years behind the original schedule. Once fully integrated, each F-35B is expected to carry up to eight SPEAR 3 rounds — turning the stealth fighter into a salvo-capable anti-air-defence shooter.
According to Breaking Defense, the test was conducted at Naval Air Station Patuxent River in Maryland, with a UK Royal Navy test pilot at the controls. Four SPEAR 3 units were used during the trial. The statement noted that this maiden flight came four years after the original timeline, with technical issues cited as a key contributor to the delay.
SPEAR 3: small body, broad target set
Developed by MBDA, SPEAR 3 (Selective Precision Effects At Range — Capability 3) is a stealth-leaning mini cruise missile with an approximate 100 km range and a precision multi-mode guidance package. Its target set includes air-defence systems, ships, tanks and fast-moving vehicles. Multi-mode seekers and a two-way data link are expected to deliver high effectiveness even against moving targets.
The F-35 Joint Program Office said that once integration is complete, an F-35B will be able to carry up to eight SPEAR 3 rounds across internal and external stations — giving the fifth-generation fighter a true SEAD-style salvo capability against integrated air-defence systems.
Strategic timing for the UK
UK Defence Minister Luke Pollard stated in April 2026 that SPEAR 3 fielding is targeted for fiscal year 2028–2029. That timeline crystallises when the carrier strike groups built around HMS Queen Elizabeth and HMS Prince of Wales gain genuine deep-strike depth from their F-35B air wings.
Combined with the 2024 SPEAR firing from a Eurofighter Typhoon in Sweden conducted with BAE Systems, the trajectory shows SPEAR 3 emerging as a cross-platform common payload standard within UK air power.
Comparative framing
SPEAR 3 has no exact peer in the Turkish inventory but shares its operational envelope with SOM-J, Çakır and the developing KARA ATMACA family. With Roketsan and TÜBİTAK-SAGE actively expanding the small-cruise-missile portfolio — and with Turkey’s KAAN fifth-generation fighter facing similar internal carriage constraints — a comparable “small body, long reach” equation is expected to enter the Turkish concept space within the next half-decade.
Next steps
The programme has queued up mission-systems integration and jettison trials next. With Royal Air Force and Royal Navy operators sharing the system, the F-35B’s precision-strike envelope will move decisively beyond the legacy MK 80-series free-fall arsenal once full operational capability is declared.
Sources
- Breaking Defense — “F-35B conducts flight test with British SPEAR mini-cruise missile”, May 2026
- F-35 Joint Program Office statements
- MBDA — SPEAR Capability 3 product page
- UK Ministry of Defence, April 2026 statements
- Wikipedia — “MBDA SPEAR 3”
