WHILE DRIVING BETWEEN 40 AND 45 MPH VEHICLE HIT A PATCH OF BLACK ICE, AND DRIVER LOST DIRECTIONAL CONTROL OF TRUCK. FRONT END CRASHED INTO A WALL AND SPUN AROUND. UPON IMPACT, BOTH FRONTAL AIR BAGS FAILED TO DEPLOY. TWO OCCUPANTS OF VEHICLE SUSTAINED BACK INJURIES. VEHICLE HAS NOT BEEN EXAMINED TO DETERMINE CAUSE FOR FAILURE OF AIR BAGS. PLEASE PROVIDE ANY ADDITIONAL INFORMATION / DOCUMENTATION.*AK