detroit/washington u.s. senators edward markey richard blumenthal wednesday renew call national highway traffic safety administration accelerate recall potentially defective takata corp air bag lawmakers cite report tuesday senate commerce committee allege takata falsify data cover problems air bag say japanese supplier might lie safety regulators years wednesday nhtsa spokesman gordon trowbridge say agency take unprecedented efforts address takata issue include first use agency accelerate remedy authority continue use every tool available make sure every american vehicle safe air bag reuters report monday nhtsa continue investigate whether recall nearly 29 million defective takata inflators unite state expand include another 70 million 90 million inflators ammonium nitrate statement markey blumenthal describe additional air bag potentially lethal tick time bomb say company show pernicious disregard safety u.s. drivers nhtsa tuesday cite consent order issue last november takata ammonium nitrate-based inflators must recall 2019 unless takata establish long-term safety agency say replacement inflators may effective several years full life vehicle therefore may also replace wednesday takata say dramatically increase production replacement part consent order nhtsa commit comprehensive framework address safety concern airbag inflators include service life test inflators subject recall former managers interview reuters describe chronic quality failures takata north american plant assessment reflect dozens company email document date 2001. problems former managers say make difficult company regulators pinpoint inflators among tens millions pose danger expose moisture ammonium nitrate cause inflator rupture deadly force spray shrapnel vehicle occupants tuesday group 10 automakers say cause takata air bag rupture link 10 deaths 100 injuries combination exposure humidity design manufacture issue use ammonium nitrate u.s. senators urge nhtsa accelerate takata air bag recall