Overview
On January 3rd, 2025, an Air Busan Airbus A321-200, registration HL7763, performing flight BX-392 from Hong Kong (HKG) to Busan (PUS), South Korea, experienced an unsafe landing gear indication during its final approach to runway 36L at Busan. The flight crew conducted a go-around and resolved the issue before safely landing on the same runway approximately 15 minutes later. No injuries or damage were reported.
Incident Details
Flight Information
• Aircraft Type: Airbus A321-200
• Registration: HL7763
• Operator: Air Busan
• Flight Number: BX-392
• Route: Hong Kong (HKG) to Busan (PUS)
• Persons on Board: 112 (passengers and crew)
Sequence of Events
1. Final Approach:
• During final descent to runway 36L, the crew received an unsafe gear indication, prompting a go-around.
2. Actions Taken:
• The crew followed the Quick Reference Handbook (QRH) procedures for an unsafe gear indication.
• After repositioning the aircraft and completing troubleshooting procedures, the issue was resolved.
3. Landing:
• The aircraft made a safe landing on runway 36L approximately 15 minutes after the initial go-around.
Post-Incident Actions
1. Inspection:
• After landing, the aircraft underwent a detailed ground inspection at Busan.
• Maintenance teams focused on the landing gear system, including the sensors, hydraulics, and electrical components responsible for gear deployment and status indication.
2. Temporary Grounding:
• The aircraft remained at Busan for approximately 6.5 hours before repositioning to Seoul Gimpo Airport (GMP).
• As of now, the aircraft remains grounded in Seoul for further inspections.
Technical Analysis
Potential Causes
1. Faulty Sensor or Indication System:
• A malfunction in the landing gear position sensor could have provided an inaccurate unsafe indication, despite the gear being fully deployed and locked.
2. Hydraulic or Mechanical Issues:
• Possible obstruction or partial failure in the landing gear deployment mechanism.
3. Electrical Fault:
• A temporary issue in the wiring or connectors of the gear indication system could have triggered the unsafe warning.
Crew Actions
• The flight crew acted in accordance with standard operating procedures (SOPs).
• Their decision to execute a go-around ensured passenger and crew safety while allowing time for proper troubleshooting.
Recommendations
1. Maintenance Procedures:
• Conduct a thorough inspection of the landing gear system, including sensors, hydraulics, and electrical circuits.
• Verify the functionality of the landing gear warning system and replace any faulty components.
2. Crew Training:
• Reinforce training for handling gear-related abnormalities, focusing on go-around procedures and decision-making during final approach.
3. Operator Review:
• Air Busan should evaluate its fleet for any systemic issues with similar landing gear configurations.
Conclusion
The Air Busan A321-200 safely resolved an unsafe gear indication during its final approach to Busan, with no injuries or damage reported. The crew’s prompt decision to execute a go-around ensured passenger safety. A detailed inspection of the landing gear system is ongoing, and any identified issues will be addressed before the aircraft is returned to service.
Disclaimer
This report is based on facts available at the time of writing. While every effort has been made to ensure accuracy, we apologise for any missed details or inaccuracies. If you are the rightful owner of any associated images and wish for their removal, please email takedown@cockpitking.com.
