Incident Boeing 737-838 (WL) VH-XZB, Wednesday 18 January 2023

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Date:	Wednesday 18 January 2023
Time:	14:15
Type:	Boeing 737-838 (WL)
Owner/operator:	Qantas
Registration:	VH-XZB
MSN:	39360/4192
Year of manufacture:	2012
Engine model:	CFMI CFM56-7B
Fatalities:	Fatalities: 0 / Occupants: 152
Other fatalities:	0
Aircraft damage:	None
Category:	Incident
Location:	1035 km E of Sydney - Australia
Phase:	En route
Nature:	Passenger - Scheduled
Departure airport:	Auckland International Airport (AKL/NZAA)
Destination airport:	Sydney-Kingsford Smith International Airport, NSW (SYD/YSSY)
Investigating agency:	ATSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
Qantas flight QF144, a Boeing 737-838, suffered an engine failure while en route between Auckland (AKL) and Sydney (SYD).
During cruise, the no. 1 engine failed. The crew declared a MAYDAY and conducted a descent to FL 240. The aircraft landed safely at 04:25 UTC.

Contributing factors
• During cruise, separation of the radial driveshaft led to a mechanical discontinuity between the engine core and accessory gearbox. This resulted in loss of the accessory gearbox-driven main fuel pump pressure and uncommanded shutdown of the left engine. In addition, the failed driveshaft prevented the engine from being restarted in-flight

Accident investigation: