No fatalities

29 Feb 2020: Zenith CH601 XL (N601ND) — Cabool, MO

Cabool, MO, United States

On 29 Feb 2020, a Zenith CH601 XL (registration N601ND) was involved in an aviation accident near Cabool, MO. No fatalities were reported. Investigators recorded the probable cause as: The loss of engine power due to failure of the No. 1 cylinder piston for reasons that could not be determined based on available evidence. This summary draws on records from NTSB; 9 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

An experimental Zodiac 601XLB experienced an in-flight engine failure due to a broken piston, resulting in a forced landing in a field. The pilot and passenger were uninjured.

Accident Overview

On February 29, 2020, at 1534 central standard time, an experimental amateur-built Zodiac 601XLB, registration N601ND, was involved in an accident near Cabool Memorial Airport (TVB), Cabool, Missouri. The pilot and passenger were uninjured. The airplane was being operated as a Title 14 Code of Federal Regulations Part 91 personal flight.

Sequence of Events

According to the pilot, the cockpit "suddenly" filled with black smoke after departing TVB. Subsequently, the engine sputtered and ceased operating. The pilot attempted to return to the airport but was unable to reach the runway and landed in a field. Both wings sustained substantial damage during the landing.

Postaccident Examination

A postaccident examination of the engine revealed that the No. 1 cylinder piston was broken into two pieces, and the piston crank link was bent. The precise reason for these component failures was not determined.

Contributing factors

Recip eng cyl section — FailureRecip eng cyl sectionContributed to outcome