ASN Wikibase Occurrence # 16753
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| Date: | Tuesday 18 March 2008 |
| Time: | 10:55 |
| Type: |  Cessna 150L |
| Owner/operator: | Arizona Aviation |
| Registration: | N19521 |
| MSN: | 15074466 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 9655 hours |
| Engine model: | Continental 0-200 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mesa, AZ -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Training |
| Departure airport: | Mesa, AZ (FFZ) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The engine lost partial power during the initial take off climb. The certified flight instructor (CFI) applied full carburetor heat and full rich mixture. The airplane did not produce enough power to maintain level flight, and the CFI landed the airplane straight ahead, colliding with trees. An inspection revealed a rubber-like material in the crankcase split line. The mixture control bottomed out before reaching the full idle stop. The spark plugs had dark sooty deposits, and the cylinder heads, piston tops, and valves all had slightly above-normal deposits. The engine ran without anomalies at different ranges of power during postaccident testing. The number one bottom spark plug, which was connected to the left magneto, did not produce a spark when the propeller was rotated by hand. The spark plug was dark and coated in oil. A compression test disclosed that the number four cylinder compression ring gaps were in the same location on the piston, causing blow-by and pressurization of the crankcase. There were also several cylinder base studs that were of an improper size.
Probable Cause: A partial loss of engine power for undetermined reasons.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Mar-2008 12:43 | Fusko | Added |
| 21-Dec-2016 19:13 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:14 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:16 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 21-Dec-2016 19:20 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 03-Dec-2017 10:23 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Source, Narrative] |
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