UK clears interim SDB-II for F-35B as StormBreaker/SPEAR 3 integration slips—corrosion and spares constrain mission rates
The UK MoD has approved the F-35B fleet’s interim stand-off strike fitment of Boeing Small Diameter Bomb II (SDB-II) under FMS to bridge delays in integrating the European-produced MBDA SPEAR 3. Separate reporting also flags corrosion and spare-parts shortfalls after the UK deployed F-35Bs with only half the planned sustainment spares, reducing mission capability.