London Heathrow Airport, London, England, United Kingdom
Newark Liberty International Airport, Newark, New Jersey, USA
Type of flight:
The aircraft was manoeuvring to line-up on Runway 27R and taxiing at a speed of approximately 6 kt when it started to slide on ice and snow. The application of asymmetric thrust failed to prevent the right main landing gear from leaving the paved surface. Subsequent disembarkation of the passengers was delayed for two and a half hours whilst de-icing equipment was provided and the taxiway deiced. There is currently no requirement to measure or assess the taxiway surface friction conditions and no such measurements were made before or after the incident. A safety recommendation relating to guidance material dealing with contamination of aerodrome surfaces has been made as a result of this incident.