Final Report E170 (F-HBXG) & C525 (F-HBXG), en-route south of Auxerre France, 12 January 2022

Final Report E170 (F-HBXG) & C525 (F-HBXG), en-route south of Auxerre France, 12 January 2022

Publication info
Author
BEA (France)
Category
Accident Reports Airworthiness Loss of Separation Air Ground Communication Human Factors
Date of publication
11/07/2023
Date for review
22/01/2050

On 12 January 2022, an Embraer 170 and a Cessna 525 crossed tracks without the prescribed minimum separation with neither ATC nor the Embraer crew being aware. Although ATC had issued acknowledged clearances to keep the Embraer 1,000 feet above the Cessna, it actually passed beneath it violating minimum lateral separation. The underlying cause of the event was found to be an un-rectified recurrent intermittent fault in one of the Cessna’s air data systems. Poor Cessna crew/controller communication during the event, systemically poor safety culture at its operator and shortcomings in the Textron Aircraft Maintenance Manual were considered contributory. 

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