What happened
Between late August and early November 2017, a series of repeated incidents occurred at Příbram Airport (LKPM). An operator of ultralight aircraft conducted multiple flights involving an Argo (registration OK-PUR07) and an ATEC Faeta NG (registration OK-WUV66).
During these operations, the crews performed landings on a former railway track located north of the asphalt runway, as well as on grass areas outside of the published grass runway. The investigation established that the aircraft frequently crossed active, approved runways while taxiing to parking positions. Radio transcripts from the Příbram RADIO frequency confirm that the crews were aware of their actions, explicitly notifying the dispatcher of their intent to land well to the right of the runway or on unapproved surfaces, even noting that such maneuvers were prohibited.
The investigation
The ÚZPLN investigation was based on information provided by the airport operator, the aircraft operator, and an analysis of radio communications between the crews and the air traffic controller. The investigation examined the operational procedures of the ultralight aircraft operator, which provides sightseeing flights, aircraft rental, and flight training.
Findings
- The aircraft operator was authorized to conduct flight activities at the airport, and both the Argo and Faeta NG maintained valid technical certificates.
- The operator conducted flight activities on unapproved surfaces without obtaining permission from all relevant landowners.
- While the crews notified the dispatcher of their intention to land off-runway, this practice significantly increased the risk of a serious aviation accident.
- The crews violated several regulations, including the Czech Republic VFR handbook for LKPM and specific aviation regulations regarding flight operations.
- The investigation noted that students undergoing flight training were exposed to non-standard and unsafe approaches to aviation safety under these real-world conditions.
Safety action
- The ÚZPLN has proposed that the Civil Aviation Authority (ÚCL) verify the flight operations conducted by the involved ultralight aircraft operator at LKPM.