Beechcraft V35 N6245V

Summary

On 27 August 2019 at about 17:06 local time, a Beechcraft V35 registered N6245V was involved in an accident near Monroe, Wisconsin, United States. 2 people were on board and one was seriously injured, one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

27 August 2019 at 17:06

Classification

Accident

Location

Monroe, Wisconsin, United States

Nearest airport

Monroe Municipal (EFT)

Coordinates

42.6631, -89.5297

Aircraft

Beechcraft V35

Registration

N6245V

Category

Airplane

Year built

1967

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Rochester → Chicago

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CEN19LA290

1 person was seriously injured.

A total loss of engine power due to the failure of the Nos. 5 and 6 connecting rods from a lack of oil lubrication for reasons that could not be determined.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The private pilot and passenger were en route on an instrument flight rules flight when the engine lost oil pressure, followed by a total loss of engine power. The pilot declared an emergency with air traffic control and stated that he “had an oil pressure event there but it’s building back up so standby.” The controller cleared him direct to the nearest airport and asked the pilot if he need any assistance at the airport, which the pilot declined. Flight track data showed that the airplane began a shallow descent toward the diversion airport before the data ended about 2 minutes later. The pilot stated that he flew directly over the airport and was unable to see it due to oil on the windshield and smoke in the cabin; he eventually performed a forced landing in a field about 4 nautical miles from the diversion airport. A postaccident disassembly examination revealed a large hole in the top of the engine crankcase above the No. 6 cylinder. The inside of the engine contained a significant amount of metallic debris. The Nos. 1 through 4 connecting rods remained attached to the crankshaft, but all exhibited significant heat distress from a lack of oil lubrication. The Nos. 5 and 6 connecting rods fractured at the bearing and sustained damage from impacting the crankshaft, cylinder walls, and the inside of the case. The ends of the Nos. 5 and 6 connecting rods and their bearings were not found or identified within the available metallic debris. It is likely that the Nos. 5 and 6 connecting rods failed due to a lack of oil lubrication; however, the reason for the oil loss could not be determined. The continued operation of the engine after the loss of oil pressure likely contributed to and aggravated the amount of damage to the engine.

Quoted verbatim from the NTSB record.