# NHTSA Engineering Analysis EA09008
> **Horton Fan Hub Failures** · Opened 2009-05-29 · Closed 2010-08-27
## Investigation
- **Action number:** EA09008
- **Type:** Engineering Analysis
- **Open date:** 2009-05-29
- **Close date:** 2010-08-27
- **Manufacturer:** PACCAR Incorporated
- **Affected makes:** KENWORTH; PETERBILT
- **Affected components:** ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
- **Affected model years:** 2007, 2008
- **Affected (make, year) variants:** 37
## Summary

PACCAR is conducting an Owner Notification Program (ONP) for select vehicles within the subject and peer populations.The ONP are attached to the closing report and can be found in the NHTSA Technical Service Bulletin (TSB) database. (TSB: 10033585, 10033584)See Closing report for investigation details.

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA09008)
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