ASN Wikibase Occurrence # 357923
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| Date: | Thursday 14 December 1995 |
| Time: | 09:00 LT |
| Type: |  Cessna P210N |
| Owner/operator: | Private |
| Registration: | N4598K |
| MSN: | P21000230 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 2422 hours |
| Engine model: | CONTINENTAL TSIO-520-P |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Grass Valley, CA -
 United States of America
|
| Phase: | Take off |
| Nature: | Executive |
| Departure airport: | |
| Novato, CA (O56) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT ABORTED HIS FIRST TAKEOFF BECAUSE THE ENGINE PRODUCED ONLY 25 INCHES OF MANIFOLD PRESSURE AND NOT THE NORMAL TAKEOFF POWER OF 38 INCHES AT 2,700 RPM. THE PILOT TURNED THE FUEL BOOST PUMP SWITCH TO LOW AND WAS ABLE TO GAIN 3 MORE INCHES OF MANIFOLD PRESSURE, BUT AGAIN NOT FULL TAKEOFF POWER. THE PILOT ATTEMPTED A SECOND TAKEOFF. AT 80 KNOTS THE PILOT ROTATED THE AIRPLANE. THE AIRPLANE BECAME LIGHT ON THE LANDING GEAR, AT WHICH TIME THE LANDING GEAR BEGAN TO RETRACT. THE PILOT IMMEDIATELY SAW THE LANDING GEAR HANDLE WAS IN THE UP POSITION AND MOVED IT TO THE DOWN POSITION. THE AIRPLANE SETTLED TO THE RUNWAY WITH ONE OF THE MAIN LANDING GEAR NOT FULLY EXTENDED. THE AIRPLANE VEERED OFF THE RIGHT SIDE OF THE RUNWAY AND STRUCK THE CONCRETE FOOTING OF A RUNWAY EDGE LIGHT UNDER CONSTRUCTION. THE POSITION OF THE LANDING GEAR LEVER IS LISTED AS AN ITEM ON THE AIRPLANE'S BEFORE STARTING ENGINE CHECKLIST. THERE WAS NO EVIDENCE OF MECHANICAL FAILURE OR MALFUNCTION FOUND THAT WOULD ACCOUNT FOR THE 8- TO 10-INCH DROP IN MANIFOLD PRESSURE.
Probable Cause: the failure of the pilot to follow the before starting engine checklist and ensure that the landing gear selector was in the down position, and the pilot's decision to takeoff with a known aircraft deficiency.
Accident investigation:
 |
|
Sources:
NTSB LAX96LA072
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 08:03 | ASN Update Bot | Added |
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