# NHTSA Engineering Analysis EA91004
> **JUMP SEAT FAILURE** · Opened 1990-10-31 · Closed 1991-03-05
## Investigation
- **Action number:** EA91004
- **Type:** Engineering Analysis
- **Open date:** 1990-10-31
- **Close date:** 1991-03-05
- **Manufacturer:** GRUMMAN CORP.
- **Affected makes:** GRUMMAN
- **Affected components:** SEATS
- **Affected model years:** 1988, 1989
- **Affected (make, year) variants:** 2
## 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=EA91004)
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