Summary
On May 02, 1989, a Mcdonnell Douglas DC-9-82 (N434AA) was involved in an incident near Minneapolis, MN. All 96 people aboard were uninjured. The aircraft sustained minor damage.
The National Transportation Safety Board determined the probable cause of this incident to be: FAILURE OF THE HYDRAULIC POWER TRANSFER UNIT SHUT-OFF (PTU S/O) VALVE DUE TO FAILED (FATIGUED) VALVE BODY ATTACH SCREWS.
This incident is documented in NTSB report CHI89IA083. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N434AA.
Accident Details
Probable Cause and Findings
FAILURE OF THE HYDRAULIC POWER TRANSFER UNIT SHUT-OFF (PTU S/O) VALVE DUE TO FAILED (FATIGUED) VALVE BODY ATTACH SCREWS.
Aircraft Information
Registered Owner (Historical)
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CHI89IA083