Incident Overview
On 20 May 2009, an EMBRAER ERJ-170 aircraft operated by PLL "LOT" SA experienced an incident during taxi at Frankfurt Airport (EDDF). After pushback and initial taxiing, the crew of another aircraft taxiing behind reported smoke emanating from the area of the right main landing gear wheels. The flight crew, who had received no brake lock indications, stopped the aircraft and requested marshal assistance.
Sequence of Events
Attempting to clear the main taxiway, the crew resumed taxi but was again warned of smoke from the right main gear. The aircraft was stopped a second time, and the controller summoned the fire brigade. Passengers disembarked onto the taxiway. Subsequent technical inspection of the right main landing gear wheels revealed damage to the disc of the right outer brake assembly. Further detailed inspection uncovered damage to discs in brake assemblies number 2, number 1, and number 3. Those assemblies were replaced. Photographs of the damaged brake components were taken.
Investigation Outcome
The Polish State Commission for Aircraft Accident Investigation (PKBWL) reported that it received no additional data regarding this event. Due to the lack of data and the operator's policy of retaining investigation reports for no longer than five years, PKBWL closed the investigation without establishing a cause. No safety recommendations were issued.