Sunday, April 18, 2021

Beechcraft A36 Bonanza, N66FN: Accident occurred April 16, 2020 in Cincinnati, Ohio

This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed.

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entities:
Federal Aviation Administration / Flight Standards District Office; Cincinnati, Ohio
Continental Engines; Mobile, Alabama 

Mel Aviation LLC

Location: Cincinnati, OH
Accident Number: CEN20LA148
Date & Time: April 16, 2020, 11:45 Local
Registration: N66FN
Aircraft: Beech 36
Injuries: 1 None
Flight Conducted Under: Part 91: General aviation - Personal

On April 16, 2020, about 1145 Eastern standard time, a Beech A36, N66FN, sustained substantial damage when it was involved in an accident near Cincinnati, Ohio. The pilot was not injured. The
airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight.

The pilot reported that he was flying the airplane from Indianapolis, Indiana (UMP), to Cincinnati, Ohio (LUK), where maintenance was to be performed. During the flight, the pilot was performing an altitude leaning schedule to attempt to diagnose high exhaust gas temperature (EGT) readings. Enroute, the pilot performed step-up climbs to 14,000 ft to record power settings. After completing the schedule of tests, the pilot was descending to about 2,500 ft and noticed an "unusual" vibration that he had not experienced before. After checking the engine analyzer, he noticed that one of the engine cylinders was not producing EGT. A few moments later, another cylinder dropped offline, and then a 3rd cylinder. Cylinders continued to drop offline and then the engine "quit."

The pilot was not able to restart the engine and declared an emergency. The airplane was over a heavily populated area just north of downtown Cincinnati, so the pilot maneuvered the airplane for an emergency landing on a roadway. Upon landing, the left wing struck a wooden post along the edge of the roadway. The nose pitched to the left and the airplane landed hard on the right main landing gear and the nose landing gear, resulting in a landing gear collapse. The airplane then pitched right, and struck another wooden post on the opposite side of the roadway with the right wing. The nose of the airplane contacted a concrete bridge abutment and the airplane slid under an overpass. The pilot secured the fuel and master switch and exited the airplane.

A Federal Aviation Administration airworthiness inspector examined the airplane and engine. He reported that the top spark plugs were removed and compression was verified to the cylinders. The air intake hoses and clamps were verified secure and tight and no obstruction were noted. The magnetos were verified to spark at all terminals. The engine controls were checked to be free and had full travel.  The mixture control screen was removed and found to be free of debris. The fittings and hoses were checked for security on the mixture control, fuel manifold valve, and fuel pump. Both the fuel inlet and fuel outlet fittings on the fuel control were found to be loose, and could be turned by hand. No adjacent impact damage was noted in the area of the loose fittings. According to maintenance records, the fuel pump had been removed and replaced on April 14, 2020, 2 days prior to the accident.

Aircraft and Owner/Operator Information

Aircraft Make: Beech
Registration: N66FN
Model/Series: 36 A36 
Aircraft Category: Airplane
Amateur Built: No
Operator: On fil
e Operating Certificate(s) Held: None
Operator Designator Code:

Meteorological Information and Flight Plan

Conditions at Accident Site: VMC
Condition of Light: Day
Observation Facility, Elevation: LUK,483 ft msl
Observation Time: 11:20 Local
Distance from Accident Site: 7 Nautical Miles
Temperature/Dew Point: 7°C /-6°C
Lowest Cloud Condition: Clear 
Wind Speed/Gusts, Direction: 10 knots / , 240°
Lowest Ceiling: None 
Visibility: 10 miles
Altimeter Setting: 30.36 inches Hg
Type of Flight Plan Filed: None
Departure Point: Indianapolis, IN (UMP)
Destination: Cincinnati, OH (LUK)

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 
Aircraft Fire: None
Ground Injuries: N/A 
Aircraft Explosion: None
Total Injuries: 1 None 
Latitude, Longitude: 39.210834,-84.459999 

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