Incident Details
Following takeoff from Campinas-Viracopos Airport, the flight crew informed air traffic control about technical problems during the climb. They received clearance to divert to São Paulo-Guarulhos Airport for an emergency landing.
On final approach, both main landing gears were lowered but reportedly not locked into position, while the nose gear remained stuck in its main wheel. Upon touchdown on runway 09L, the aircraft sank onto its belly and slid for several dozen metres before coming to rest. All five occupants escaped without injury, though the aircraft sustained damage beyond repair.
Findings
Investigators determined that hydraulic pump number 2 on engine number 3 failed after takeoff, leading to an oil leak and subsequent loss of hydraulic pressure. The undercarriage could be lowered but could not be locked down. The crew attempted to lower the nose gear manually, but this caused the locking pin to obstruct and damage the landing gear extension system.
Additionally, it was reported that several seals located on hydraulic lines were broken and had not been replaced during the last C check.