Wednesday, April 15, 2020

Beechcraft N35 Bonanza, N1258Z: Accident occurred April 10, 2020 in Sidney, Fremont County, Iowa

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 Entity:
Federal Aviation Administration / Flight Standards District Office; Des Moines, Iowa

Location: Sidney, IA
Accident Number: CEN20LA145
Date & Time: 04/10/2020, 1225 CDT
Registration: N1258Z
Aircraft: Beech 35
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal 

On April 10, 2020, about 1225 central daylight time (CDT), a Beechcraft N35, N1258Z, was substantially damaged when it was involved in an accident about 3 nautical miles northwest of Sidney, Iowa. The airline transport pilot and passenger were uninjured. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight.

According to the pilot, this was the 3rd flight following an annual inspection; the airplane had flown about 1.5 hours since the completion of the annual inspection. About one hour into the cross country while in cruise flight about 4,500 ft above mean sea level (MSL), the engine ceased to produce power. The pilot stated that there was no warning and the engine instruments appeared normal. He attempted to restore power, but when he turned the key to "START," he heard a sound consistent with an attempt to start an already running engine. When he moved the throttle from the cruise setting to idle and then back to the previous setting, the RPM gauge fluctuated. When the airplane descended to 1,500 ft MSL, about 1,000 ft above ground level, he began to look for an emergency landing area. He said that it was at this time that he and his passenger began detecting a "slight burning smell."

Upon touching down in the grass field, the nose gear collapsed and the left main gear was compressed up and into the left wing, resulting in substantial damage to the wing.

The airplane was equipped with a Continental Motors IO-470 series engine. A detailed engine examination is pending. 

Aircraft and Owner/Operator Information

Aircraft Make: Beech
Registration: N1258Z
Model/Series: 35 N35
Aircraft Category: Airplane
Amateur Built: No
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:
Observation Time:
Distance from Accident Site:
Temperature/Dew Point: 10°C
Lowest Cloud Condition: Clear
Wind Speed/Gusts, Direction: / , Variable
Lowest Ceiling: None
Visibility:  10 Miles
Altimeter Setting: 30.16 inches Hg
Type of Flight Plan Filed: VFR
Departure Point: St Louis, MO (1H0)
Destination: Omaha, NE (MLE) 

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 40.826111, -95.670278

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