Sunday, April 07, 2019

Cessna T210F Turbo Centurion, registered to the pilot and operated as a personal flight under the provisions of Title 14 Code of Federal Regulations Part 91, N6107R: Accident occurred June 17, 2018 in Desdemona, Texas

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

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Dallas, Texas

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board: 

Location: Desdemona, TX
Accident Number: CEN18LA229
Date & Time: 06/17/2018, 0830 CDT
Registration: N6107R
Aircraft: CESSNA T210F
Aircraft Damage: Substantial
Defining Event: Loss of engine power (total)
Injuries: 1 Serious, 2 Minor
Flight Conducted Under: Part 91: General Aviation - Personal 

On June 17, 2018, at 0830 central daylight time, a Cessna T210F airplane, N6107R, nosed over during an off airport forced landing in Desdemona, Texas. The private pilot and one passenger received minor injuries, and a second passenger was seriously injured. The airplane was substantially damaged. The airplane was registered to the pilot and operated as a personal flight under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions existed near the accident site at the time of the accident, and a flight plan had not been filed for the flight. The airplane departed the Dublin Municipal Airport (9F0), Dublin, Texas, about 0820, en route to the Gregory M. Simmons Memorial Airport (GZN), Cisco, Texas.

The pilot stated that the engine began running rough during cruise flight at 2,400 ft above mean sea level. He leaned the fuel mixture and the engine roughness subsided. A few minutes later, the engine began running rough once again. He switched fuel tanks and there was no change in the engine operation. Shortly thereafter, the engine lost power. The pilot made a forced landing in a soft, sandy field and the airplane nosed over.

The initial postaccident engine examination revealed the engine remained attached to the airframe. Various wires, cables, and hoses remained attached to the engine. The top spark plugs exhibited normal wear but were dark in color and oily. The cylinders were examined using a boroscope were unremarkable.

The engine was then removed from the airframe and shipped to the manufacturer for a test run.

The engine was placed in the test cell and started without hesitation. The engine ran at 1,200 rpm and 1,600 rpm with the fuel pump mixture control at full. After 2 minutes of run time, the engine power started to oscillate. The engine was shut down and the mixture control was adjusted to about half of where it was originally set. The engine was started again and after 1 minute and 20 seconds the engine power again began to decrease, with the fuel pressure reaching 40 psi, which was 8 psi higher than the maximum unmetered flow limit of 32 psi.

The fuel pump was removed and placed on a test bench. At full power, 2,700 rpm, the fuel flow was about 170 pounds per hour with a fuel pressure of 92 psi. According to the engine manufacturer, the fuel pressure should have been between 29 and 32 psi. The adjustment screw was set to a fuel pressure of 30 psi and the pump was reinstalled on the engine for another test run.

The engine was restarted and run up to 1,600 rpm. The rpm slowly dropped to 1,498 rpm. The engine power was increased to 2,552 rpm and the fuel pressure stabilized at 30.18 psi with smooth engine operation.

During the initial engine run the engine was observed to have excessive manifold pressure. During the second engine run the turbocharger controller was adjusted to maintain normal manifold pressures. 

Pilot Information

Certificate: Private
Age: 62, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 03/06/2017
Occupational Pilot: No
Last Flight Review or Equivalent: 10/03/2017
Flight Time:   332 hours (Total, all aircraft), 276 hours (Pilot In Command, all aircraft), 42 hours (Last 90 days, all aircraft), 11 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft) 

Aircraft and Owner/Operator Information

Aircraft Make: CESSNA
Registration: N6107R
Model/Series: T210F F
Aircraft Category: Airplane
Year of Manufacture: 1965
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: T210-0007
Landing Gear Type: Retractable - Tricycle
Seats: 4
Date/Type of Last Inspection: 11/22/2017, Annual
Certified Max Gross Wt.: 2725 lbs
Time Since Last Inspection: 35 Hours
Engines: 1 Reciprocating
Airframe Total Time: 5315 Hours
Engine Manufacturer: Continental
ELT: C91A installed, not activated
Engine Model/Series: TSIO-520C
Registered Owner: On file
Rated Power: 285 hp
Operator: On file
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: SEP, 1321 ft msl
Distance from Accident Site: 22 Nautical Miles
Observation Time: 1135 CDT
Direction from Accident Site: 100°
Lowest Cloud Condition: Scattered / 2000 ft agl
Visibility:  10 Miles
Lowest Ceiling: Broken / 3400 ft agl
Visibility (RVR):
Wind Speed/Gusts: 7 knots /
Turbulence Type Forecast/Actual: /
Wind Direction: 170°
Turbulence Severity Forecast/Actual: /
Altimeter Setting: 30.02 inches Hg
Temperature/Dew Point: 26°C / 20°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Dublin, TX (9F0)
Type of Flight Plan Filed: None
Destination: Cisco, TX (3F2)
Type of Clearance: None
Departure Time: 0820 CDT
Type of Airspace: Class E

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: 1 Serious, 1 Minor
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Serious, 2 Minor
Latitude, Longitude: 32.219444, -98.510000

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