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Safety record
NTSB · Oct 15, 2026 · FAA ADs · Oct 17, 2026 · SDRs · Oct 16, 2026
NTSB events (2)
Accident · substantial damage
Jul 20, 2003 · Waverly, IA
The main rotor blade push-pull rods being corroded, sustaining fatigue, and separating in cruise and the main rotor blade contacting the tail boom during the emergency landing. Factors were the diminished aircraft control and the vibrations encountered during flight after the rod separation.
THE PLT RPRTD HE WAS DEMONSTRATING A FULL TOUCHDOWN AUTOROTATION IN WINDS THAT WERE FROM 290 DEG AT 15 GUSTING 20 KTS. HE STATED THE TOUCHDOWN WAS SOFT WITH A LOT OF PITCH PULLED IN; HOWEVER, AS HE LOWERED THE COLLECTIVE AFTER TOUCHDOWN, THE RETREATING BLADE FLEXED DOWNWARD & SEVERED THE AFT PORTION OF THE TAIL BOOM & THE TAIL ROTOR DRIVE SHAFT. THE PLT BELIEVED HE HAD LOWERED THE COLLECTIVE TOO…
These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.
Airframe (F-28C)Only with: Helicopters with trim relay P/N KUP14D55-24, KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or P/N AD1R-10.
Airframe (F-28C)Only with: Helicopters with a trim relay P/N KUP14D55-472, M83536/10-015M, or M83536/10-024M installed; does not apply to helicopters with reversible trim motor P/N 28-16621 or AD1R-10.