Boeing 777-268ER, HZ-AKC, 11 February 2009

From:
Air Accidents Investigation Branch
Published
10 December 2014
Category:
Commercial - fixed wing
Report type:
Bulletin - Correspondence investigation
Date of occurrence:
11 February 2009
Aircraft type:
Boeing 777-268ER
Location:
Stand 319, London Heathrow Airport
Registration:
HZ-AKC

Boeing 777-268ER, HZ-AKC

Summary:

The aircraft was parked on Stand 319, with the parking brake set and the passengers disembarking, when the aircraft began to roll backwards. Pressure in the parking brake system had dissipated causing a loss of brake application. The right hydraulic system AC electric pump was activated and this reinstated the hydraulic brake pressure, which brought the aircraft to a stop. A failure of the parking brake valve was identified as the cause of the loss of hydraulic pressure in the parking brake system.

Download report:

Boeing 777-268ER, HZ-AKC 11-09.pdf (318.20 kb)

Updates to this page

Published 10 December 2014
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