Overview
• Operator: Delta Airlines
• Aircraft Model: Airbus A330-900
• Registration: N410DZ
• Flight Number: DL-121
• Route: Minneapolis (USA) to Tokyo Haneda (Japan)
• Date: 27 January 2025
• Occupants: Unspecified
• Injuries: None reported
• Damage: None reported
Incident Summary
Delta Airlines flight DL-121, operating an Airbus A330-900, departed Minneapolis-St. Paul International Airport (MSP) bound for Tokyo Haneda (HND) when the crew encountered flight control anomalies shortly after takeoff from runway 30L. The crew initially requested a descent to 5000 feet, later revising it to 4000 feet, citing the need to remain clear of cloud and in visual meteorological conditions (VMC) while troubleshooting the issue.
The crew remained in communication with air traffic control, indicating they were uncertain about the severity of the problem but were considering a return to Minneapolis. After approximately 65 minutes of troubleshooting, the aircraft conducted a safe landing on runway 30L without further complications.
Sequence of Events
1. Departure & Initial Climb
• The A330-900 departed MSP’s runway 30L without any reported anomalies.
• As the aircraft climbed, the crew encountered flight control issues and notified ATC.
2. Descent & Troubleshooting
• The flight crew requested to descend to 5000 feet, later revising it to 4000 feet, citing the need to stay in VMC while assessing the situation.
• The crew communicated their uncertainty regarding the flight control issues and their intention to remain in the Minneapolis area.
3. Decision to Return & Safe Landing
• After further assessment and coordination with maintenance and ATC, the crew opted to return to MSP.
• The aircraft landed safely on runway 30L approximately 65 minutes after departure.
Investigation & Possible Causes
• Potential Flight Control Malfunction:
• The exact nature of the flight control issue remains unknown, but it warranted an immediate return.
• Possible fly-by-wire system anomalies, hydraulic control issues, or software-related discrepancies are being considered.
• Environmental & Operational Factors:
• The request to descend into VMC conditions suggests the crew may have needed visual confirmation of aircraft performance or stability.
• Maintenance & Aircraft Status:
• The aircraft remained on the ground in Minneapolis for further inspections and has not resumed service as of 28 January 2025.
Safety Considerations & Recommendations
• Flight Control System Review:
• Airbus and Delta Airlines maintenance teams are expected to conduct a thorough review of the aircraft’s flight control systems and ECAM alerts recorded during the event.
• Crew Decision-Making:
• The crew’s decision to descend to VMC conditions highlights precautionary measures taken to mitigate risk and ensure situational awareness.
• Operational Impact:
• Flight DL-121 was cancelled, and passengers were rebooked on alternative flights.
Aircraft Status & Next Steps
• The A330-900 remains grounded at MSP, awaiting further inspections and clearance for return to service.
• Delta Airlines and Airbus technical teams are expected to conduct a detailed investigation into the root cause of the issue.
Disclaimer
This report is based on available information as of 28 January 2025. While every effort has been made to ensure accuracy, the completeness of the details cannot be guaranteed. If you are the rightful owner of any referenced materials and wish them removed, please email takedown@cockpitking.com.
