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Last updated: 23 January 2022
Datum:woensdag 15 maart 1989
Type:Silhouette image of generic YS11 model; specific model in this crash may look slightly different
NAMC YS-11A-300F
Luchtvaartmaatschappij:Mid Pacific Airlines
Registratie: N128MP
Constructienummer: 2139
Bouwjaar: 1970
Aantal vlieguren:24088
Motoren: 2 Rolls-Royce Dart 542-10J
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 0 / inzittenden: 0
Totaal:slachtoffers: 2 / inzittenden: 2
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:Lafayette-Purdue University Airport, IN (LAF) (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Ferry
Vliegveld van vertrek:Terre Haute-Hulman Field, IN (HUF/KHUF), Verenigde Staten
Vliegveld van aankomst:Lafayette-Purdue University Airport, IN (LAF/KLAF), Verenigde Staten
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)


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

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 Terre Haute-Hulman Field, IN en Lafayette-Purdue University Airport, IN bedraagt 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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