Transport Canada Mandates Bell 407 Tail Boom Checks | Aviation International News

Transport Canada Mandates Bell 407 Tail Boom Checks

Transport Canada issued an airworthiness directive mandating torque checks and visual inspections on Bell 407 tail booms following in-flight separation.

Bell 407 in flight — Transport Canada issued an airworthiness directive mandating torque checks and visual inspections on Bell 407 tail booms following the in-flight tail boom separation on a 407 in Hawaii earlier this year. (Photo: Anna Zvereva, CC BY-SA 2.0, via Wikimedia Commons)

By Mark Huber • Contributor

December 19, 2022

Transport Canada has issued airworthiness directive CF-2022-68 mandating torque checks and visual inspections on Bell 407 tail booms following the issuance of a similar alert service bulletin (ASB 407-22-128) on December 8 from Bell earlier this month.

The actions follow calls by the NTSB for such inspections as it continues its investigation of an in-flight tail boom separation on a 407 in Hawaii earlier this year. The 407 is manufactured in Canada and Transport Canada is the original grantor of its type certificate. The checks and inspections must be performed within 25 hours of time-in-service or 30 days, whichever comes first. The effective date is December 29.

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