ASN Wikibase Occurrence # 361917
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| Date: | Thursday 10 June 1993 |
| Time: | 20:20 LT |
| Type: |  Cessna 172N |
| Owner/operator: | Northern Colorado Air Charter |
| Registration: | N4829E |
| MSN: | 17271668 |
| Total airframe hrs: | 3925 hours |
| Engine model: | LYCOMING O-320-H2AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Livermore, CO -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Ft.collins, CO (3V5) |
| (3V5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE ON A LOCAL AREA PERSONAL FLIGHT, THE ENGINE RPM DROPPED FROM 2,300 TO 1,400 RPM FOLLOWED BY ENGINE VIBRATION. THE PILOT ELECTED TO LAND ON THE ONLY ROAD IN THE AREA WHICH CONTAINED A 40 DEGREE RIGHT TURN ALONG THE LANDING ROLL PATH. AS THE AIRCRAFT NEGOTIATED THE TURN, THE RIGHT WING STRUCK A FENCE POST AND THE AIRCRAFT SPUN INTO A DITCH. EXAMINATION REVEALED A FAILURE OF THE RIGHT FORWARD CYLINDER VALVE ROCKER BOX EXHAUST STUD WHICH BACKED OUT AND PREVENTED THE INTAKE VALVE FROM WORKING PROPERLY.
Probable Cause: A PARTIAL POWER LOSS WHEN THE ROCKER BOX FOR ONE CYLINDER DISENGAGED. A FACTOR WAS: UNSUITABLE TERRAIN FOR A FORCED LANDING.
Accident investigation:
 |
|
Sources:
NTSB DEN93LA068
History of this aircraft
Other occurrences involving this aircraft
| 15 November 1993 | N4829E | Northern Colorado Air Charter | 0 | Fort Collins, CO | |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Mar-2024 15:46 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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