Final
None
Sep 21, 2023
N406TD accident at Linden, NJ
Bell 407 at Linden, NJ
DateSep 21, 2023
Tail numberN406TD
AircraftBell 407 · B407
LocationLinden, NJ
Phase of flightUnknown
OperationUnk
InjuriesNone
NTSB caseENG23LA045
Probable cause
The fracture of the upper-left tail boom attachment bolt due to abnormal loading of the bolt caused by a gap and misalignment between the upper-left longeron and the tail boom. Contributing to this incident was the lack of a check to verify the absence of gaps or misalignments at the conclusion of installation for the upper-left longeron.
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