Incident Overview
On May 3, 2006, at 12:45 UTC, an L-200A Morava with registration OK-PLG was operating a flight from Prague-Kbely (LKKB) to Brno-Tuřany (LKBU) and then to Ostrava-Mošnov (LKBE). The aircraft was operated by SECAR MK AIR, s.r.o. During the approach for landing at LKBE, the pilot observed that the nose gear locked-position indicator did not illuminate and noted a drop in hydraulic pressure.
Operational Response
The pilot decided to abort the landing at LKBE and return to the home base at LKKB. During the return flight, the pilot visually confirmed a hydraulic fluid leak on the right engine cowling. Multiple attempts to manually extend the nose gear were unsuccessful, although the main gear indicators remained green and mechanical signals were correct.
Resolution and Landing
Upon approaching LKKB, air traffic control was requested to assist with a visual inspection of the landing gear. A subsequent attempt at emergency extension resulted in proper indication of the nose gear being extended and locked. The aircraft landed safely on the backup grass runway 06 at LKKB with increased caution. Post-landing inspections confirmed a hydraulic leak originating from the pump area of the right engine.
Investigation Findings
The investigation, conducted by the Institute for Professional Investigation of Causes of Aviation Accidents (ÚZPLN), determined that the incident was caused by a breach in the seal of the hydraulic pump on the right engine. This failure led to a loss of hydraulic fluid controlling the landing gear extension circuit. The pilot was found to be qualified and acted in accordance with the flight manual. No injuries were reported, and the aircraft sustained no damage.