Cessna 421C N770JW

Summary

On 9 October 1983 at about 16:20 local time, a Cessna 421C registered N770JW was involved in an accident near Center, Colorado, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

9 October 1983 at 16:20

Classification

Accident

Location

Center, Colorado, United States

Nearest airport

Leach (IV8)

Coordinates

37.7504, -106.1104

Aircraft

Cessna 421C

Registration

N770JW

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Unknown → Shreveport

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

DEN84FA004

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

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.

Quoted verbatim from the NTSB record.