ASN Wikibase Occurrence # 36793
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| Date: | Tuesday 3 August 1999 |
| Time: | 14:07 LT |
| Type: |  Cessna 177B Cardinal |
| Owner/operator: | Aero Haven Inc. |
| Registration: | N19113 |
| MSN: | 17702558 |
| Total airframe hrs: | 9432 hours |
| Engine model: | Lycoming O-360-A1F6D |
| Fatalities: | Fatalities: 2 / Occupants: 3 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Tusayan, AZ -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Grand Canyon, AZ |
| Big Bear, CA (L35) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The cross-country flight departed Big Bear, California, with stops in Las Vegas, Nevada, Grand Canyon, Arizona, and returning to Big Bear. The accident departure from Grand Canyon National Park Airport was performed on runway 03; an 8,999-foot runway with a 0.8 percent up gradient (76-foot increase), and a density altitude of 8,800 feet msl. Witnesses reported that the airplane appeared to be slow, and barely cleared trees and buildings while climbing into mildly rising terrain. About 2 miles from the runway, the airplane was seen to roll to the left and descended into trees. The FAA Approved Flight Manual (AFM) for the accident airplane/performance data was not found at the accident site; however, a Cessna 337 Skymaster AFM was found. A California Airport Directory was also recovered. No Grand Canyon Airport information was found at the site other than the Las Vegas Sectional Chart airport information. Examination of the dual magneto revealed internal case corrosion on the left interior of the magneto. The right magneto was timed 22 degrees BTC instead of 25 degrees BTC. Test bench results indicated that the right magneto exhibited a weak spark. The massive electrode spark plugs exhibited a gap in excess of the recommended maximum gap for the plug. Cylinder plugs No. 1 and 2 were fuel sooted, No. 3 appeared lean, and No. 4 was slightly sooted.
Probable Cause: was the pilot's failure to have available and consult the FAA approved flight manual for performance data and, the high density altitude. Contributing to the accident were the dual magneto and spark plug system issues affecting optimum engine performance.
Accident investigation:
 |
|
Sources:
NTSB LAX99FA262
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 14-Dec-2017 08:46 | ASN Update Bot | Updated [Operator, Source, Narrative] |
| 07-Apr-2024 18:58 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Source, Narrative, Category, Accident report] |
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