Final
None
Mar 16, 2025
N513JM accident at Helena, MT
Beech C90A — Sys/Comp malf/fail (non-power) at HLN (Helena, MT)
DateMar 16, 2025
Tail numberN513JM
AircraftBeech C90A · Beechcraft King Air · BE9L
LocationHLN — Helena, MT
Phase of flightLanding
OperationPart 91 Other work use
InjuriesNone
NTSB caseWPR25LA122
Probable cause
The failure of the left main landing gear to fully extend and lock as a result of broken downlock switch wires and the failure of the pilots to complete the manual gear extension checklist.
View the full NTSB report (PDF) →
Get email alerts
Follow any of these and NTSB Alerts emails you when a matching report publishes — including when this case is updated.