ASN Wikibase Occurrence # 138372
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Date: | Sunday 4 September 2011 |
Time: | 09:35 |
Type: | Christen Eagle II |
Owner/operator: | Private |
Registration: | N88CE |
MSN: | LARSON-0001 |
Engine model: | Lycoming IO-360-A1A |
Fatalities: | Fatalities: 2 / Occupants: 2 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Near Seward, Nebraska -
United States of America
|
Phase: | En route |
Nature: | Private |
Departure airport: | Seward, NE (SWT) |
Destination airport: | Seward, NE (SWT) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The flight instructor, who was seated in the front seat, was giving the private pilot, who was seated in the rear seat, a check-out in the single-engine biplane. The engine lost power on takeoff, and the airplane impacted a field. Examination of the airplane and engine revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation; however the mixture control lever, which was located below and to the left of the rear-seated pilot's left knee (there was no mixture control in the front seat), was pulled out about 2 inches. The lever should have been full forward during takeoff. The propeller control was situated directly below the mixture control and found in the full forward position. The propeller control lever is usually adjusted by the pilot after takeoff. Although the mixture and propeller control levers were color-coded, it's possible that the 6'5" private pilot's left knee blocked his view of the controls due to his size and the small cockpit. The mixture control knob was slightly larger than the propeller control knob, but both were similar in shape. It is possible that the pilot thought he was adjusting the propeller control rather than the mixture control on takeoff and inadvertently shut off fuel to the engine. Postaccident examination of the mixture control cable from the cockpit to the engine revealed it moved freely and there was no evidence it had been moved during impact.
Probable Cause: The pilot’s inadvertent pulling of the mixture control lever on takeoff, which shut down the engine.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CEN11FA616 |
Status: | Investigation completed |
Duration: | 1 year and 8 months |
Download report: | Final report |
|
Sources:
NTSB
Location
Revision history:
Date/time | Contributor | Updates |
05-Sep-2011 00:18 |
gerard57 |
Added |
06-Sep-2011 08:54 |
gerard57 |
Updated [Aircraft type, Source, Narrative] |
06-Sep-2011 11:09 |
RobertMB |
Updated [Aircraft type, Registration, Cn, Operator, Other fatalities, Departure airport, Narrative] |
03-Dec-2017 16:10 |
ASN Update Bot |
Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Damage, Narrative] |
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