ASN Wikibase Occurrence # 380683
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| Date: | Sunday 9 October 1983 |
| Time: | 10:20 LT |
| Type: |  Cessna 421C |
| Owner/operator: | Jerry Spearman |
| Registration: | N770JW |
| MSN: | 1052 |
| Total airframe hrs: | 877 hours |
| Engine model: | Continental GTSIO-520-N |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Center, CO -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | |
| Shreveport, LA (KDTN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ACFT COLLIDED WITH A DIRT BANK AFTER A LEFT ENGINE OVERSPEED AND LOSS OF DIRECTIONAL CONTROL DURING TAKEOFF. THE PLTHAD ALREADY ABORTED ONE TAKEOFF DUE TO OVERBOOST AND A STICKING WASTEGATE. THE PROBLEM SEEMED CORRECTED AFTER WORK AND LUBRICATION BY A MECHANIC AND WORKED SATISFACTORILY FOR ABOUT A MONTH. THEN DURING THIS TKOF THE OVERBOOST WAS ENOUGH TOCAUSE THE PLT TO LOSE DIRECTIONAL CONTROL AND DEPART THE RWY. THE PLT WAS TRYING TO 'SAVE THE TAKEOFF' BY RETURNING TO THE RWY WHEN THE ACFT WING STRUCK A DIRT PILE. POST ACCIDENT INVESTIGATION SHOWED THAT A STICKING VALVE IN THE TURBOCHARGER WASTEGATE OF THE LEFT ENGINE AND A STUCK PRESSURE RELIEF VALVE CAUSED THE OVERBOOST CONDITION.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB DEN84FA004
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Apr-2024 19:22 | ASN Update Bot | Added |
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