NHTSA safety investigation
NHTSA Investigation EA91009
Engineering Analysis · Mack Trucks, Inc. · STEERING:HYDRAULIC POWER ASSIST SYSTEM
An investigation is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
POWER STEERING FAILURE
An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- EA91009
- Investigation type
- Engineering Analysis (EA)
- Status
- Closed
- Manufacturer
- Mack Trucks, Inc.
- Component
- STEERING:HYDRAULIC POWER ASSIST SYSTEM
- Opened
- Nov 30, 1990
- Closed
- May 28, 1991
- Associated recall campaign
- 91V080000
Vehicles named in this investigation
7 model years across 2 models
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.