{"nhtsa_id":11007531,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-09-09","date":"2024-09-09","document_id":"SIL-3157","mfr_campaign":"SIL-3157","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"Altec has learned that the structural subbase welds on certain DH derricks built from July 2016 to December 2023 could contain stitch welds rather than the required continuous welds, which could result in cracks forming in the subbase.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007531-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007531-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11007531","components":[],"codes":[],"topics":[],"vehicles":[{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2016,"year_to":2023,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}