The contact owns a 2016 Ford Explorer. The contact stated that while driving at an undisclosed speed, the A-pillar trim on the drivers side windshield started to detach. The contact received notification of NHTSA Campaign Number: 24V031000 (Structure); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was contacted. The dealer sent a tech to the residence to diagnose the vehicle. The contact was informed that the A-pillar trim retention clips had failed and needed to be replaced. The dealer confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 90,000. VIN tool confirms parts not available.