Incident Overview
Date: Friday 8 September 2006
Aircraft Type: Airbus A300B4-622R
Owner/operator: Qatar Airways
Registration Number: A7-ABV
Location: Madrid-Barajas Airport (MAD/LEMD) –
ÿ Spain
Phase of Flight: Taxi
Status: Minor
Casualties: Fatalities: 0 / Occupants: 218
Component Affected: Brakes for tyres 5 and 6Brakes for tyres 5 and 6
Investigating Agency: CIAIACCIAIAC
Category: Accident
A long taxi out for takeoff resulted in brake overheating of tyres 5 and 6. The crew initiated a return to the stand, but a fire broke out. The aircraft was evacuated due to the overheating brakes and a subsequent fire. A stuck servo valve caused by a high hardness particle in the hydraulic fluid led to the overheating.A long taxi out for takeoff resulted in brake overheating of tyres 5 and 6. The crew initiated a return to the stand, but a fire broke out. The aircraft was evacuated due to the overheating brakes and a subsequent fire. A stuck servo valve caused by a high hardness particle in the hydraulic fluid led to the overheating.
Description
The brakes for tyres 5 and 6 overheated during a long taxi out for takeoff. The crew decided to return to the stand, but a fire broke out. The aircraft was evacuated. The brakes overheated due to residual pressure trapped in the alternate brake system caused by a stuck servo valve which resulted from the presence of a high hardness particle in the hydraulic fluid.
Source of Information
http://www.fomento.es/NR/rdonlyres/B4E6D093-B209-4A84-A87A-EA289CA86D87/97960/2010_Boletin_003.pdfhttp://www.fomento.es/NR/rdonlyres/B4E6D093-B209-4A84-A87A-EA289CA86D87/97960/2010_Boletin_003.pdfPrimary Cause
Stuck servo valve due to high hardness particle in hydraulic fluid.Stuck servo valve due to high hardness particle in hydraulic fluid.Share on:
