{"source":"nhtsa","campaign":"91V080000","as_of":"2026-10-19","investigations":[{"action":"EA91009","kind":"EA","kind_name":"Engineering analysis","opened":"1990-11-30","closed":"1991-05-28","open":false,"manufacturer":"Mack Trucks, Inc.","component":"STEERING:HYDRAULIC POWER ASSIST SYSTEM","subject":"POWER STEERING FAILURE","summary":null,"campaigns":["91V080000"],"match":null,"models":[]}],"note":"An investigation is NHTSA looking into a possible defect. It is not a finding that a defect exists, and it does not say that any one vehicle is affected.","attribution":[],"url":"https://open.wenmarpro.com/recalls/nhtsa/91V080000"}