ASN Wikibase Occurrence # 43493
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| Date: | Wednesday 10 July 1991 |
| Time: | 20:00 LT |
| Type: |  Aeronca 11AC |
| Owner/operator: | Terrance A. Grahm |
| Registration: | N86083 |
| MSN: | 11AC-507 |
| Total airframe hrs: | 1700 hours |
| Engine model: | CONTINENTAL A&C 65 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Central Lake, MI -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WITNESSES OBSERVED THE LIGHT, SINGLE ENGINED, AIRPLANE PERFORMING A CLIMB AFTER A TOUCH AND GO LANDING. DURING THE CLIMB WITNESSES REPORTED THAT THE AIRPLANE SUDDENLY PITCHED STRAIGHT DOWN AND DESCENDED INTO THE TERRAIN. AN ON SCENE INVESTIGATION DID NOT REVEAL ANY CONTROL, AIRFRAME, OR POWERPLANT CONDITIONS WHICH WOULD CONTRIBUTE TO SUCH AN UNCONTROLLED DESCENT. THE AIRSTRIP HAD A 3 DEGREE DOWNSLOPE FROM THE CENTER OF THE RUNWAY TOWARD BOTH THE APPROACH AND DEPARTURE ENDS. THE TERRAIN OFF THE DEPARTURE END OF THE RUNWAY DROPS SUDDENLY INTO AN APRX 300 FOOT DEEP VALLEY. INVESTIGATION REVEALED THE AIRPLANE'S LAST ANNUAL INSPECTION WAS 10 YEARS PRIOR TO THE ACCIDENT, THE PILOT'S STUDENT PILOT/THIRD CLASS MEDICAL CERTIFICATE WAS ISSUED APRX 13 YEARS PRIOR TO THE ACCIDENT, AND THAT THE PILOT'S LAST FLIGHT AS PIC WAS APRX TWO YEARS PRIOR TO THE ACCIDENT.
Probable Cause: A RESULT OF THE PILOT IN COMMAND NOT MAINTAINING AIRCRAFT CONTROL AND NOT PERFORMING REMEDIAL ACTION AFTER THE AIRPLANE ENTERED THE STEEP DESCENT. A FACTOR CONTRIBUTING TO THIS ACCIDENT WAS THE PILOT IN COMMAND'S LACK OF RECENT EXPERIENCE.
Accident investigation:
 |
|
Sources:
NTSB CHI91DEM06
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 11-Apr-2024 14:04 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Source, Narrative, Category, Accident report] |
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