Incident Overview
Date: Monday 21 September 1992
Aircraft Type: IAI 1124 Westwind
Owner/operator: Air Sweden
Registration Number: SE-DLK
Location: Ume Airport (UME) –
ÿ Sweden
Phase of Flight: Take off
Status: Destroyed, written off
Casualties: Fatalities: 0 / Occupants: 7
Component Affected: Low-pressure compressor fan discLow-pressure compressor fan disc
Category: Accident
An aircraft experienced an engine failure resulting in an uncontained loss of power, leading to a fuel leak and subsequent fire. The fire damaged the aircraft fuselage, and the failure was attributed to a cracked fan disc within the low-pressure compressor, caused by low-frequency fatigue. Insufficient manufacturing control and inadequate crack inspection contributed to the incident.An aircraft experienced an engine failure resulting in an uncontained loss of power, leading to a fuel leak and subsequent fire. The fire damaged the aircraft fuselage, and the failure was attributed to a cracked fan disc within the low-pressure compressor, caused by low-frequency fatigue. Insufficient manufacturing control and inadequate crack inspection contributed to the incident.
Description
Takeoff was aborted at a speed of about 50 knots following an uncontained engine failure. Leaking fuel caught fire on the ground, causing severe damage to the aircraft fuselage. It appeared an LPT disk had failed. The engine failure and the subsequent fire were caused by a rupture of the fan disc in the right engine’s low pressure compressor and leaving the aircraft broken. The disc rupture was a consequence of cracking due to low-frequency fatigue. Contributing factors were insufficient manufacturing control and deficiencies in the follow-up crack inspection.
Source of Information
https://www.havkom.se/assets/reports/C-1993_48-SE-DLK.pdfhttps://www.havkom.se/assets/reports/C-1993_48-SE-DLK.pdfPrimary Cause
Rupture of the fan disc in the low-pressure compressor due to low-frequency fatigue.Rupture of the fan disc in the low-pressure compressor due to low-frequency fatigue.Share on:
