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Last updated: 23 January 2022
Fecha:miércoles 15 marzo 1989
Tipo:Silhouette image of generic YS11 model; specific model in this crash may look slightly different
NAMC YS-11A-300F
Operador:Mid Pacific Airlines
Registración: N128MP
Numéro de série: 2139
Año de Construcción: 1970
Horas Totales de la Célula:24088
Motores: 2 Rolls-Royce Dart 542-10J
Tripulación:Fatalidades: 2 / Ocupantes: 2
Pasajeros:Fatalidades: 0 / Ocupantes: 0
Total:Fatalidades: 2 / Ocupantes: 2
Daños en la Aeronave: Destruido
Consecuencias: Written off (damaged beyond repair)
Ubicación:Lafayette-Purdue University Airport, IN (LAF) (   Estados Unidos de América)
Elevación del lugar del accidente: 185 m (607 feet) amsl
Fase: Aproximación (APR)
Aeropuerto de Salida:Terre Haute-Hulman Field, IN (HUF/KHUF), Estados Unidos de América
Aeropuerto de Llegada:Lafayette-Purdue University Airport, IN (LAF/KLAF), Estados Unidos de América
The aircraft was on short finals (at 400 feet agl, 35deg flaps) when it suddenly pitched down, entering a steep descent. It partially recovered before impact with a dirt hill, 500 feet short of the Runway 28. Ice accretion on the horizontal stabilizer leading edge was found (0,50-0,75 inch).

Probable Cause:

PROBABLE CAUSE: "A loss of control due to the improper in-flight decisions by the crew and the undetected accumulation of ice on the leading edge of the horizontal stabilizer, during flight in a forward centre of gravity condition and exacerbated by the extension of full landing flaps. "

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 6 months
Accident number: CHI89MA057
Download report: Summary report

» ICAO Adrep Summary 4/90 (#27)

Subsiguiente / acciones de seguridad

NTSB issued 3 Safety Recommendations

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photo of NAMC-YS-11A-300F-N128MP
accident date: 15-03-1989
type: NAMC YS-11A-300F
registration: N128MP

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Terre Haute-Hulman Field, IN to Lafayette-Purdue University Airport, IN as the crow flies is 111 km (69 miles).
Accident location: Exact; deduced from 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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