Incident Overview
On 14 September 2016, a Bombardier DHC-8-400 aircraft operated by PLL LOT SA experienced a nose steering malfunction during landing at Warsaw Chopin Airport (EPWA). The aircraft was landing on Runway 33 when, immediately after touchdown, the NOSE STEERING warning light illuminated. The flight crew lost the ability to steer the nose landing gear and stopped on the runway, notifying air traffic control (ATC) of the situation.
Crew Actions
Following the QRH (Quick Reference Handbook) checklist for the NOSE STEERING malfunction, the crew performed a system reset. This restored nose steering capability, and the aircraft continued taxiing to the parking stand without further incident. Upon arrival, the crew informed the Maintenance Control Center (MCC) and the mechanic present, who conducted a system inspection. The crew then left the aircraft for passport clearance before a subsequent flight. When they returned, the nosewheel steering switch was found in the STEERING position. The next flight was performed without any issues, and an Air Safety Report (ASR) was filed.
Investigation Findings
The investigation, conducted by the operator under the supervision of the State Commission on Aircraft Accident Investigation (PKBWL), determined that the malfunction was a transient error in signal flow between the steering manifold and the steering handle. The issue did not recur on later flights.
Preventive Actions
As a preventive measure, the operator recorded the event in its SMS database and classified it according to its internal criteria. The incident will be included in the safety performance indicators (SPI) monitored under the principles of the operator's Safety Management Manual.