ASN Wikibase Occurrence # 363378
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Wednesday 1 July 1992 |
| Time: | 10:00 LT |
| Type: |  Cessna U206E |
| Owner/operator: | Combined Energies Corp |
| Registration: | N9455G |
| MSN: | U2061655 |
| Total airframe hrs: | 4476 hours |
| Engine model: | CONTINENTAL IO-520-F |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mayer, AZ -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Phoenix, AZ (KDVT) |
| Ely, NV (KELY) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ENGINE QUIT WITH A LOUD BANG ABOUT 15 MINUTES INTO THE CROSS COUNTRY FLIGHT. THE AIRCRAFT WAS OVER MOUNTAINOUS TERRAIN AND THE PILOT ATTEMPTED TO LAND IN A SMALL PASTURE. THE AIRCRAFT ENCOUNTERED ROUGH TERRAIN DURING THE LANDING ROLL OUT AND NOSED OVER. INVESTIGATION REVEALED THAT THE NUMBER 2 MAIN BEARING HAD SPUN, CLOSING OFF THE INTERNAL OIL PASSAGE IN THE CRANKSHAFT AND JOURNAL. THE ENGINE SUSTAINED A RESULTING OIL STARVATION FAILURE OF THE NUMBER 2 AND 3 CONNECTING RODS. REVIEW OF THE MAINTENANCE RECORDS ESTABLISHED THAT A MAINTENANCE FACILITY HAD FOUND A LARGE AMOUNT OF METAL PARTICLES IN THE OIL 40 HOURS PRIOR TO THE ACCIDENT. THE MAINTENANCE FACILITY WARNED THE PILOT ABOUT THE EXCESSIVE INTERNAL ENGINE WEAR, RECOMMENDING 'FURTHER INSPECTION PRIOR TO FLIGHT.' NO CORRECTIVE ACTION ENTRIES WERE NOTED IN THE LOGBOOK. THE ENGINE WAS FOUND TO HAVE ACCRUED 1,520 HOURS SINCE OVERHAUL. THE MANUFACTURER RECOMMENDS A TIME BETWEEN OVERHAUL INTERVAL OF 1,700 HOURS.
Probable Cause: THE FAILURE OF THE ENGINE DUE TO THE SLIPPAGE OF THE NUMBER 2 MAIN BEARING AND THE RESULTANT OIL STARVATION FAILURE OF THE NUMBER 2 CONNECTING ROD. THE NUMBER 2 MAIN BEARING SLIPPAGE WAS CAUSED BY THE FAILURE OF THE PILOT/OWNER TO OVERHAUL THE ENGINE IN A TIMELY FASHION WHEN INTERNAL WEAR PATTERNS INDICATED THAT A POTENTIAL BEARING PROBLEM EXISTED. A FACTOR IN THE ACCIDENT WAS THE UNSUITABLE NATURE OF THE TERRAIN FOR A FORCED LANDING.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA273
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Mar-2024 16:42 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation