# NHTSA Engineering Analysis EA90022
> **ABSENCE OF SAFETY CHAIN** · Opened 1990-04-10 · Closed 1990-12-13
## Investigation
- **Action number:** EA90022
- **Type:** Engineering Analysis
- **Open date:** 1990-04-10
- **Close date:** 1990-12-13
- **Manufacturer:** VULCAN TRLR. MFG. CO.,INC
- **Affected makes:** VULCAN
- **Affected components:** EQUIPMENT
- **Affected model years:** 9999
- **Affected (make, year) variants:** 1
## Summary

There is no summary currently available

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA90022)
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