The contact owns a 2016 Land Rover Range Rover. The contact stated that while driving at an undisclosed speed, the contact heard a loud clanking sound coming from underneath the vehicle. The contact stated that while the vehicle was parked, the contact noticed that both sides of the suspension arms had fractured. The contact received notification of the NHTSA Campaign to Number: 24V840000 (Steering); however, the part to do the recall repair was unavailable. The dealer was contacted and confirmed that parts were not yet available. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The approximate failure mileage was 61,000. VIN tool confirms parts not available.