Incident Overview
Date: Tuesday 28 November 1967
Aircraft Type: Vickers 745D Viscount
Owner/operator: United Airlines
Registration Number: N7465
Location: Raleigh/Durham Airport, NC (RDU) –
ÿ United States of America
Phase of Flight: Landing
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 43
Component Affected: Nose wheel steering jack twin relief valveNose wheel steering jack twin relief valve
Investigating Agency: NTSBNTSB
Category: Accident
During rollout after landing, the nose wheel steering jack twin relief valve failed due to fatigue, resulting in severe oscillations that caused the nose gear to collapse.During rollout after landing, the nose wheel steering jack twin relief valve failed due to fatigue, resulting in severe oscillations that caused the nose gear to collapse.
Description
On rollout after landing the nose wheel steering jack twin relief valve failed due to fatigue. This caused severe oscillations, enough to cause the nose gear to collapse. PROBABLEÿCAUSES: airframeÿ-ÿlandingÿgear:ÿnosewheelÿsteering miscellaneousÿacts, conditionsÿ-ÿfatigueÿfracture FACTOR: miscellaneousÿacts, conditionsÿ-ÿvibration, excessive
Primary Cause
Miscellaneous acts, conditions-fatigueMiscellaneous acts, conditions-fatigueShare on:
