{"nhtsa_id":11038483,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-10-16","date":"2026-10-13","document_id":"SIL-3312","mfr_campaign":"SIL-3312","replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"Altec has learned that certain DH, D3000, AN, and AM units built with three stage A-frame outrigger assemblies from October 2025 to February 2026 could have been manufactured with the incorrect revision of the stop block. Some A-frames were built with the incorrect stop block which can cause the unit to experience a drop of the intermediate section of the outrigger leg when deploying, which can cause damage to the cylinder and cause loss of cylinder function.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038483-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038483-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11038483","components":[],"codes":[],"topics":[],"vehicles":[{"make":"ALTEC","model":"AN SERIES AERIAL DEVICE","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"ALTEC","model":"DIGGER DERRICK","year_from":2025,"year_to":2026,"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":[]}