AAIB Analysis Reveals Key Details on Leonardo AW139 Incident

Leonardo AW139 (G-CIMU) experienced a critical tail rotor duplex bearing failure at Norwich Airport on June 13, 2022. During a post-flight maintenance inspection, wear damage was discovered on the bearing and actuator cover of the AW139 helicopter. This damage indicated that if the helicopter had continued to operate with the compromised bearing, it could have led to a loss of tail rotor control. The bearing is classified as a vital component, and a similar failure in an AW169 helicopter resulted in a tragic accident in 2018. Despite a thorough forensic investigation, the bearing was too severely damaged to ascertain the specific cause of the failure. To address the safety concerns regarding the tail rotor duplex bearings on the Leonardo AW139, three safety recommendations have been proposed. For detailed insights and updates, refer to the [AAIB report](https://www.gov.uk/government/news/aaib-report-leonardo-aw139-g-cimu) and check additional information on aviation safety through the [Federal Aviation Administration](https://www.faa.gov) as well as [AeroSafety](https://www.aerosafety.com). For more on related aviation safety topics, visit our pages at [Globe Migrant](www.globemigrant.com/aviation-safety) and [Globe Migrant](www.globemigrant.com/helicopter-safety).

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