# NHTSA Defect Petition DP78035
> **BUS BRAKES** · Opened 1978-05-02 · Closed 1978-09-08
## Investigation
- **Action number:** DP78035
- **Type:** Defect Petition
- **Open date:** 1978-05-02
- **Close date:** 1978-09-08
- **Manufacturer:** GRUMMAN CORP.
- **Affected makes:** GRUMMAN
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 9999
- **Affected (make, year) variants:** 1
## Summary

BUS BRAKES

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=DP78035)
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