The Air Force Mobility Command has confirmed it grounded a large number of its C-130 Hercules cargo planesIt is investigating how many were affected by faulty propeller barrels that could crack and leak fluid, which were installed on 100 C-130HsThey were also installed on  the entire inventories of eight MC-130H Combat Talons, seven EC 130H Compass Calls and one TC-130HThe groundings will affect the Air Force Reserves and the Air National GuardIt is unclear how long it will take the Air Force to fix the defective barrels
See Details: Air Force grounds more than 100 C-130 Hercules cargo planes over defective propeller barrels that could CRACK