ASN Wikibase Occurrence # 133027
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| Date: | Saturday 15 July 1995 |
| Time: | 12:35 LT |
| Type: |  Piper PA-28-140 |
| Owner/operator: | John Ro Yoon |
| Registration: | N8742N |
| MSN: | 28-25557 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 4000 hours |
| Engine model: | Lycoming O-320-E2A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Big Bear City, CA -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | (L35) |
| Corona, CA (L66) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ABOUT 300 FEET INTO THE INITIAL CLIMB, THE PILOT NOTED THE ENGINE RPM HAD DECREASED AND THE RATE OF CLIMB WAS ZERO. HE INITIATED A LEFT TURN BACK TOWARD THE RUNWAY, BUT NOTED HE WAS LOSING BOTH AIRSPEED AND ALTITUDE. HE LOWERED ONE NOTCH OF FLAPS TO MAINTAIN ALTITUDE, BUT THE AIRPLANE CONTINUED TO DESCEND. WITH AIRSPEED STILL DECREASING, THE AIRPLANE COLLIDED WITH TERRAIN SHORT OF THE RUNWAY. THE ESTIMATED DENSITY WAS 8,700 FEET. ACCORDING TO THE MANUFACTURER, MAXIMUM POWER AVAILABLE AT THAT DENSITY ALTITUDE WOULD HAVE BEEN BETWEEN 65 AND 70 PERCENT, OR NO MORE THAN 2,315 RPM AT CRUISE. NO DISCREPANCIES WERE NOTED DURING AN EXAMINATION OF THE AIRPLANE AND A POST-ACCIDENT RUNUP OF THE ENGINE.
Probable Cause: THE PILOT'S IMPROPER PLANNING/DECISION AND FAILURE TO OBTAIN OR MAINTAIN ADEQUATE AIRSPEED DURING TAKEOFF. A FACTOR RELATING TO THE ACCIDENT WAS: THE HIGH DENSITY ALTITUDE.
Accident investigation:
 |
|
Sources:
NTSB LAX95LA254
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 13:35 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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