What happened
On November 17, 2025, a Boeing 737, registration LV-KEG, was performing a scheduled commercial passenger flight from El Calafate to Aeroparque Jorge Newbery in Buenos Aires. During the approach phase of the flight, the aircraft experienced an electrical malfunction that resulted in the disconnection of the number 2 engine generator.
Because the Auxiliary Power Unit (APU) had been deferred for this specific flight, the aircraft was unable to utilize a secondary backup source. This left the crew with only a single source of alternating current, provided by the number 1 engine generator. In response to the loss of redundancy, the crew declared a Pan-Pan urgency signal. The flight continued its descent and approach, eventually landing at Aeroparque Jorge Newbery without further incident. The aircraft vacated the runway and taxied to the gate normally.
The investigation
This was a desk investigation conducted by the JST. Following the landing, maintenance personnel from the operator performed inspections and repairs in accordance with the manufacturer's maintenance manual. The investigation confirmed that the aircraft was returned to service the following day without further issues.