4 fatalities

2018 Cirrus VK-30 Crash Near Agua Dulce, California (N52TH)

AGUA DULCE, CA, United States

On February 11, 2018, a HASTINGS THOMAS G CIRRUS VK 30 NO SERIES (registration N52TH) was involved in an aviation accident near AGUA DULCE, CA. 4 people were killed. Investigators recorded the probable cause as: The driveshaft fracture due to overstress loading and rotational bending as a result of the under-torqued nuts on the elastomeric couplings backing off and the subsequent in-flight separation of the horizontal fairing due to contact with the separated end of… This summary draws on records from NTSB.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

An experimental Cirrus VK-30, N52TH, crashed near Agua Dulce, California, on February 11, 2018, killing all four occupants. The NTSB found a fractured driveshaft and propeller overspeed damage.

Accident Overview and Flight History On February 11, 2018, an experimental, amateur-built Cirrus VK-30, registration N52TH, impacted terrain near Agua Dulce, California, at approximately 1059 Pacific standard time. The private pilot and three passengers were fatally injured, and the aircraft sustained substantial damage. The flight originated from Henderson Executive Airport (HND) in Las Vegas, Nevada, around 1000, with the intended destination being Van Nuys Airport (VNY). Visual meteorological conditions prevailed at the time, and no flight plan was filed. The pilot, who was also the aircraft's builder, had previously made this trip multiple times. A witness reported seeing the aircraft at an altitude of 2,000 to 3,000 feet before it entered a vertical descent as it approached the mountains. The last radar communication occurred at 1027 when the pilot acknowledged an updated altimeter setting.

Contributing factors

Causes

Engine/transmission coupling — FailureIncorrect service/maintenance

Other contributing factors

Maintenance personnel