Incident Overview
Date: Wednesday 1 November 1995
Aircraft Type: Fokker F-28 Fellowship 1000
Owner/operator: Canadian Regional Airlines
Registration Number: C-FCRK
Location: Calgary International Airport, AB (YYC) –
ÿ Canada
Phase of Flight: Landing
Status: Substantial, repaired
Casualties: Fatalities: 0 / Occupants: 30
Component Affected: Left Main Gear Torque LinkLeft Main Gear Torque Link
Investigating Agency: TSBTSB
Category: Accident
During the landing roll, a left main gear torque link failed, causing wheel separation after a shimmy developed. The degraded oleo compression due to excessive nitrogen pressure, high flap angle, low descent velocity, and low aircraft weight resulted in the failure of the torque link.During the landing roll, a left main gear torque link failed, causing wheel separation after a shimmy developed. The degraded oleo compression due to excessive nitrogen pressure, high flap angle, low descent velocity, and low aircraft weight resulted in the failure of the torque link.
Description
During the landing roll the left main gear torque link failed and the wheels separated after a shimmy developed. The shimmy dampening capability of the torque links was degraded by a combination of non-standard clearances in the torque link pins and bushings, and a delay in oleo compression. The oleo did not compress on initial touchdown because of excessive nitrogen pressure, 42 degree flap angle, low descent velocity and low aircraft landing weight.
Primary Cause
Excessive nitrogen pressure in the oleo compression system, combined with high flap angle, low descent velocity, and low aircraft landing weight.Excessive nitrogen pressure in the oleo compression system, combined with high flap angle, low descent velocity, and low aircraft landing weight.Share on:
