No fatalities

2018 Beech A36 Forced Landing Near Shullsburg, Wisconsin (N36LP)

Shullsburg, WI, United States

On May 5, 2018, a BEECH A36 UNDESIGNAT (registration N36LP) was involved in an aviation accident near Shullsburg, WI. No fatalities were reported. Investigators recorded the probable cause as: A catastrophic engine failure due to improper torque on the engine through-bolt nuts, which resulted in relative movement between the crankcase halves, damage to a main journal bearing, and a loss of oil lubrication. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 2026-08-03Data APIEditorial standards

A Beech A36, N36LP, was substantially damaged during a forced landing near Shullsburg, Wisconsin, on May 4, 2018, after losing engine power. The pilot was uninjured.

Incident Overview and Flight Details On May 4, 2018, at approximately 1930 central daylight time, a Beech A36 airplane, registration N36LP, sustained substantial damage during a forced landing near Shullsburg, Wisconsin. The aircraft was operated by a private individual under Title 14 Code of Federal Regulations Part 91. The flight originated from Okmulgee Regional Airport (OKM) in Okmulgee, Oklahoma, at 1537, with an intended destination of Bucky's Airport (WN09) in Plainfield, Wisconsin. Visual meteorological conditions prevailed, and the flight was operating under an instrument flight rules flight plan. The pilot reported that while in cruise flight at 7,000 feet mean sea level, he heard an unusual noise from the engine. Shortly after, the engine lost power, prompting the pilot to execute a forced landing in an open field. The pilot observed smoke and suspected that oil may have escaped from the engine. The pilot was not injured, and the airplane sustained substantial damage to the lower fuselage and nose landing gear wheel well structure.

Contributing factors

Recip engine power section — FailureIncorrect service/maintenanceMaintenance personnel