Date: Monday, December 2, 2024
Time: Approximately 09:00
Location: Over the Republic of Khakassia, Russia
Incident Overview
An Azur Air Boeing 767-306ER (Registration: RA-73034) operating as flight ZF2943 from Tomsk-Bogashevo Airport (TOF) to Phuket International Airport (HKT) encountered a serious technical malfunction en route. The aircraft, with over 300 passengers aboard, diverted to Novosibirsk International Airport (OVB) following an in-flight shutdown of its right engine.
No fatalities were reported, but the aircraft remains grounded pending an investigation. The flight crew initially reported a drop in oil pressure in the right engine after reaching cruising altitude. Shortly after, the engine shut down entirely. A PAN-PAN emergency signal was declared as the crew initiated a descent toward the alternate airport.
Technical Analysis: Potential Causes of the Incident
1. Engine Oil System Failure
- Oil Leakage: A breach in the oil system, such as a ruptured line or faulty seal, could result in inadequate lubrication.
- Oil Pump Malfunction: Failure of the oil pump might have led to insufficient oil delivery to engine components.
- Sensor or Indication Fault: Although less likely given the subsequent engine shutdown, a malfunctioning sensor might have initially provided false data to the crew.
2. Component Wear and Tear
Given the aircraft’s age (manufactured in 1997), aging engine components may have played a role:
- Bearing or Shaft Failure: Worn-out bearings or shafts might have caused overheating and subsequent failure.
- Seal Deterioration: Over time, seals can degrade, leading to oil leaks or contamination.
3. Contamination or Blockage
Contaminants in the oil system, such as debris or sludge, can obstruct oil flow:
- Maintenance Gaps: Inadequate or improper maintenance could result in undetected oil contamination.
- Blocked Oil Lines or Filters: Obstructions in the oil pathways can restrict lubrication and cooling.
4. External Factors
- Foreign Object Damage (FOD): While less likely at cruising altitude, ingestion of debris during takeoff or ascent could have initiated damage.
- Operational Stress: Continuous high engine output during initial climb could exacerbate pre-existing vulnerabilities.
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Confidence Rating
The information provided is based on news reports and social media sources, which may not always be fully verified. This analysis is a self-effort and does not reflect official statements or conclusions. As such, the confidence rating for this data is considered unofficial and subject to further investigation.
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