Incident Overview
On September 15, 2011, at John F. Kennedy International Airport in New York, USA, a Boeing 767-300 operated by PLL LOT experienced an incident. The aircraft was being prepared for a flight to Warsaw Chopin Airport (EPWA). During the pre-flight inspection, the crew discovered and documented damage to one of the brake assemblies.
Findings
The aircraft had previously been released for the flight by the JFK airport ground maintenance team after a pre-departure check (PDC), which was confirmed by an entry in the PDC documentation. Despite this clearance, the crew identified the damaged brake assembly during their own inspection. The damaged brake unit and its associated wheel were subsequently replaced. The flight departed with a delay.
Causes
The incident had two identified causes: 1. Damage to the brake assembly of one wheel, from an undetermined cause. 2. Careless performance of the pre-flight inspection by the JFK airport ground maintenance team.