ASN Wikibase Occurrence # 243079
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| Date: | Thursday 24 September 2020 |
| Time: | 11:05 |
| Type: | Quicksilver MX II Sprint |
| Owner/operator: | Private |
| Registration: | N9045Z |
| MSN: | 0558 |
| Year of manufacture: | 2000 |
| Total airframe hrs: | 513 hours |
| Engine model: | Rotax 582 Mod 90 |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Skylark Field Airport (ILE/KILE), Killeen, TX -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Killeen Municipal Airport, TX (ILE/KILE) |
| Killeen Municipal Airport, TX (ILE/KILE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane had just departed, and witnesses reported seeing the airplane maneuver without engine power. A dash-cam video of the accident showed the airplane attempt to return to the airport. The airplane flew at a low altitude with its wings rocking side to side. During the final portion of the flight, the airplane’s right wing dropped, and the airplane descended into the ground, consistent with an exceedance of the critical angle of attack leading to an aerodynamic stall. The airplane came to rest inverted next to the westbound highway guard rail. The left wing and fuselage sustained substantial damage.
Examination of the airplane after the accident revealed no preimpact anomalies with respect to the airframe. Examination of the 2-stroke engine revealed scoring between the magneto side piston and its corresponding cylinder, consistent with cold seizure. The cold seizure was likely the result of improper engine warm-up or excessive temperature differential between the coolant entering the engine compared to the coolant exiting the engine. The airplane had been equipped with a larger radiator than the engine manufacturer supplied. The reason for the cold seizure could not be definitively determined.
The pilot was at risk of impairment from combined effects of hydrocodone and chlorpheniramine. However, whether impairing effects of those medications contributed to the accident cannot be determined.
Based on the available evidence, the airplane’s engine lost power due to cold seizure for a reason that could not be determined. While attempting to return to the airport, the pilot exceeded the airplane’s critical angle of attack leading to an aerodynamic stall and impact with the ground.
Probable Cause: A total loss of engine power due to cold seizure for a reason that could not be determined, and the pilot’s subsequent exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall and impact with the ground.
Accident investigation:
 |
|
Sources:
https://www.kwtx.com/2020/09/24/plane-crashes-in-local-highway-median/
https://kdhnews.com/news/breaking/reported-plane-crash-in-harker-heights-near-killeen-city-limits/article_9234126e-fe82-11ea-b8b7-e3e46f540e24.html
NTSB
https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N9045Z
History of this aircraft
Other occurrences involving this aircraft
| 22 September 2008 | N9045Z | 0 | Killeen, Texas | |
sub |
Location
Images:
Photo: NTSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Sep-2020 17:06 | Geno | Added |
| 24-Sep-2020 17:08 | Geno | Updated [Source] |
| 24-Sep-2020 17:17 | RobertMB | Updated [Aircraft type, Registration, Cn, Operator, Nature, Source, Narrative] |
| 24-Sep-2020 17:51 | Geno | Updated [Total fatalities, Total occupants, Departure airport, Source, Narrative] |
| 08-May-2022 09:46 | Captain Adam | Updated [Time, Location, Phase, Destination airport, Source, Narrative, Category, Accident report, Photo] |
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