Accidents
NTSB: Corroded Engine VG Parts Caused Naples CL604 Crash
Engines were sent to the manufacturer for evaluation
Accident

The NTSB released the final report today on the Hop-A-Jet Bombardier Challenger 604 crash on Feb. 9, 2024, in Naples, Florida. The probable cause of the accident cites corrosion in the jet’s GE CF34-3B engines' variable geometry (VG) system, which controls airflow through the high-pressure compressor by adjusting the position of the inlet guide vanes and the first five stages of stator vanes.

According to the NTSB, after both engines were sent to GE for post-crash evaluation, VG tests revealed “corrosion was observed in the high-pressure compressor (HPC) case flow path area, with the most significant corrosion found in the VG stage 5 area. Extensive corrosion was observed in the HPC case VG stage 5 stator vane spindle bores.

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