What happened
On July 4, 2017, at approximately 15:10 UTC, an Embraer ERJ-195, registration SP-LNF, was undergoing preparations for flight LO677 from Warsaw Chopin Airport (EPWA) to Moscow Sheremetyevo (UUEE). During the process of supplying compressed air to engines number 1 and number 2, the airstarter hose ruptured at the mounting ring of the aircraft connection. This occurred specifically after engine number 2 had been started. The incident involved two ground personnel, but no injuries were sustained by the crew, and the aircraft suffered no damage.
The investigation
The investigation focused on the mechanical failure of the compressed air delivery system during the engine start sequence. The PKBWL examined the condition of the equipment and the circumstances surrounding the pressurized air supply to the engines.
Findings
- The primary cause of the incident was the natural technical wear of the air hose.
- No contributing circumstances were identified during the investigation.