Narrative:
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: "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. "
» NTSB
accident date: 15-03-1989
type: NAMC YS-11A-300F
registration: N128MP
| Status: | Accident investigation report completed and information captured |
| Date: | Wednesday 15 March 1989 |
| Time: | 07:26 |
| Type: |  NAMC YS-11A-300F |
| Operator: | Mid Pacific Airlines |
| Registration: | N128MP |
| MSN: | 2139 |
| First flight: | 1970 |
| Total airframe hrs: | 24088 |
| Engines: | 2 Rolls-Royce Dart 542-10J |
| Crew: | Fatalities: 2 / Occupants: 2 |
| Passengers: | Fatalities: 0 / Occupants: 0 |
| Total: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Aircraft fate: | Written off (damaged beyond repair) |
| Location: | Lafayette-Purdue University Airport, IN (LAF) ( United States of America)
|
| Crash site elevation: | 185 m (607 feet) amsl |
| Phase: | Approach (APR) |
| Nature: | Ferry/positioning |
| Departure airport: | Terre Haute-Hulman Field, IN (HUF/KHUF), United States of America |
| Lafayette-Purdue University Airport, IN (LAF/KLAF), United States of America |
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:
 |
|
Sources:
» ICAO Adrep Summary 4/90 (#27)» NTSB
Follow-up / safety actions
NTSB issued 3 Safety Recommendations
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Photos
accident date: 15-03-1989
type: NAMC YS-11A-300F
registration: N128MP
Map
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.
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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