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Last updated: 20 July 2019
Status:Definitief
Datum:vrijdag 10 februari 1978
Tijd:16:50
Type:Silhouette image of generic BE99 model; specific model in this crash may look slightly different
Beechcraft 99 Airliner
Luchtvaartmaatschappij:Columbia Pacific Airlines
Registratie: N199EA
Constructienummer: U-37
Bouwjaar: 1968
Aantal vlieguren:13701
Motoren: 2 Pratt & Whitney Canada PT6A-20
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 15 / inzittenden: 15
Totaal:slachtoffers: 17 / inzittenden: 17
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:0,5 km (0.3 mijl) N of Richland Airport, WA (RLD) (   Verenigde Staten)
Fase: Kruisvlucht (ENR)
Soort vlucht:Binnenlandse lijnvlucht
Vliegveld van vertrek:Richland Airport, WA (RLD), Verenigde Staten
Vliegveld van aankomst:Seattle/Tacoma International Airport, WA (SEA/KSEA), Verenigde Staten
Vluchtnummer: 23
Beschrijving:
The aircraft lifted off at a point of 1173 feet-1486 feet down runway 36 and was then seen to begin a steep climb at an angle of 20-45deg. to 300 feet-400 feet height. The plane then turned left and descended nose-down at a flightpath angle of about 45deg. until it struck the ground 1669 feet past the runway end and caught fire.

Probable Cause:

PROBABLE CAUSE: "The failure and inability of the flightcrew to prevent rapid pitchup and stall by exerting sufficient push force on the control wheel. The pitchup was induced by the combination of a mistrimmed horizontal stabilizer and a center of gravity near the aircraft's aft limit. The mistrimmed condition resulted from discrepancies in the aircraft's trim system and the flightcrew's probable preoccupation with making a timely departure. Additionally a, malfunctioning stabilizer trim actuator detracted from the flightcrew's efforts to prevent the stall.
Contributing to the accident were inadequate flightcrew training, inadequate trim warning system check procedures, inadequate maintenance procedures, and ineffective FAA surveillance."

Accident investigation:
cover
Investigating agency: NTSB
Status: Investigation completed
Duration: 10 months
Accident number: NTSB/AAR-78-15
Download report: Final report

Bronnen:
» NTSB-AAR-78-15


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Kaart
Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Richland Airport, WA en Seattle/Tacoma International Airport, WA bedraagt 260 km (162 miles).
Accident location: Exact; as reported in the official accident report.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Beech 99

  • 239 built
  • 14e ongeval
  • 8e dodelijk ongeval
  • The zwaarste ongeval
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