Incident Description
On March 18, 2015, a SAAB-340A aircraft operated by SprintAir SA experienced a control issue after landing at Poznań Airport (EPPO). The flight crew reported an inability to steer the nose wheel and could not retract the PL lever from the FI position to the GI position following touchdown. The planned flight was subsequently canceled.
Technical Examination
The following day, maintenance personnel reviewed the Flight Data Recorder (FDR) logs and identified a malfunction. The crew reset the FI STOP OVRD PULL lever, replaced brake unit No. 1, replaced main wheels No. 1 and No. 2, and performed maintenance actions to improve the nose wheel steering bearing operation. System tests were conducted to verify functionality.
Determination of Cause
The investigation determined that the inability to control the nose wheel steering and the inability to retract the PL lever were caused by the pulling out of the N9 (LDG RELAYS) circuit breaker.
Operator Actions
In response, the operator took the following preventive measures:
- Notified flight and maintenance personnel about the incident.
- Discussed the incident during recurrent training sessions.
- Utilized data from the incident in simulator training.
The aircraft safety commission issued no safety recommendations.
This incident did not result in any injuries or damage to the aircraft.