CESSNA CONQUEST II manuals

This document is an investigation report by the Australian Transport Safety Bureau (ATSB) concerning an incident involving a Cessna 441 (Conquest II) aircraft, registered as VH-JFU. The report details an engine malfunction that occurred during a passenger charter flight on September 7, 2021. The pilot experienced abnormal engine indications, which led to a diversion to Tindal Airport. The investigation revealed that maintenance errors, specifically the transposition of oil lines during an engine change, contributed to the malfunction. The report outlines the findings, safety actions taken by the operator and manufacturer, and emphasizes the importance of adhering to maintenance protocols to prevent similar incidents in the future.

• The incident involved a Cessna 441 (Conquest II) aircraft, registered VH-JFU.
• The pilot experienced torque fluctuations and high oil pressure during flight, leading to a diversion.
• Maintenance checks revealed that the air/oil cooler return line and air/oil separator vent line were transposed during an engine change.
• The incorrect installation of oil lines was not detected during inspections, highlighting a gap in maintenance protocols.
• Safety actions included marking oil tank fittings and revising maintenance documentation to prevent similar errors.