CORONA, CA, USA
N7011S
Cessna 150H
The airplane lost engine power on takeoff and made an off airport landing in an open field adjacent to the departure end of the runway. After touchdown the nose landing gear dug into the soft dirt and the airplane became inverted. The purpose of the both flights on the day of the accident was to conduct pattern work. The student pilot had flown the accident airplane earlier in the day and noted a loss of power on the climb out, which he attributed to the wind. The engine came back online and he continued the flight. When he came back to land he noted the same loss of power. He shutdown the engine and took a break before flying again. Prior to the accident flight he conducted a preflight. He visually verified, with the fuel gage and checking the fuel tank, that there was 1/4 tank of fuel. He concluded that there was a sufficient amount of fuel for the duration of his flight. No discrepancies were noted with the first takeoff and landing. On the second takeoff, the engine started to lose power and he made an off airport landing. During the recovery, no fuel was found on-scene. The fuel system was inspected and found to be intact. Approximately 1 gallon of fuel was drained from the aircraft to engine fuel line. An engine run was conducted with no discrepancies noted. The airplane was refueled the day before the accident with 9 gallons of fuel, which brought the total amount of fuel on board to 15 gallons. According to flight logs, the airplane flew for 2.2 hours the day before the accident. The pilot stated that he flew .4 hours prior to the accident flight. According to the airplane manufacturer, the airplane burns 3.0 gallons of fuel an hour at a power setting of 1,800 rpm, and 3.5 gallons of fuel is unusable.
On August 9, 2000, at 1345 hours Pacific daylight time, a Cessna 150H, N7011S, experienced a loss of engine power on takeoff. The pilot made an off airport landing in an open field adjacent to the departure end of runway 25 at the Corona Municipal Airport, Corona, California. The airplane became inverted after the nose landing gear dug into soft dirt after touchdown. Alpha Aircraft Group, d.b.a. Corona Flight Academy, operated the airplane under the provisions of 14 CFR Part 91 for the purpose of flight instruction. The airplane sustained substantial damage. The student pilot, on an unsupervised solo, was not injured. Visual meteorological conditions prevailed for the local area instructional flight. A flight plan had not been filed. The airplane was departing at the time of the accident and was scheduled to terminate at Corona. A witness to the accident stated he was in his hangar and heard the airplane takeoff. It did not sound unusual. He then heard the engine cut out and went outside to see what was happening. He saw the airplane about 1/3 the way down the runway below the tree line in a shallow climb attitude. He estimated that the airplane was 30 feet agl. When the airplane passed by his hangar it lost about 10 feet of altitude. He heard the engine come back online and indicated that the pilot continued with the takeoff. The witness reported that the engine sputtered again. The airplane entered a 45-degree bank when he lost sight of it behind a row of hangars. According to the student pilot, he had been signed off the day before the accident for solo flight. The purpose of both flights on the day of the accident was to conduct pattern work. On the first flight of the day, he noted a "slight" loss of power for a second, which he attributed to winds. The engine came back online and he continued the flight. When he returned to land he noted the same loss of power. He shutdown the engine and took a break for a few minutes. When he returned, he conducted another preflight. He visually checked the oil, fuel, and corresponding gages. He determined there was approximately 1/4 tank of fuel. He concluded that there was a sufficient amount of fuel for the intended duration of flight. No discrepancies were noted during the run-up. The student pilot flew once around the pattern, landed, taxied back, and took off again. During the second takeoff, about 200 feet agl, the engine started to lose power. To avoid a stall and a crash into the trees at the departure end of the runway, he aimed for an open field next to the airport. He intended to attempt a soft field landing; however, the field was "too soft." After touchdown, the nose landing gear dug into the dirt and collapsed. The airplane came to rest upside down. A fuel receipt obtained from the Corona airport indicated the airplane had been refueled on August 8, 2000, with 9.179 gallons of fuel. Approximately 4 gallons was on board prior to refueling, which brought the total fuel on board at that time to 15 gallons. Corona Flight Academy flight logs indicate the airplane flew for a total of 2.2 hours the day before the accident. On August 9, the airplane flew for .4 hours prior to the accident flight. According to the manufacturer's owner's manual, a total of 3.5 gallons of fuel is unusable. Fuel burn for this airplane is 3.0 gallons per hour at 1,800 rpm. Eastman Aircraft at the Corona airport recovered the airplane on the day of the accident. Recovery personnel did not observe any wet areas or discolored vegetation beneath the airplane. The fuel system was inspected by a Federal Aviation Administration (FAA) inspector at Eastman's facilities and found to be intact. Approximately 1 gallon of fuel was drained from the aircraft to engine fuel line. On August 16, 2000, the FAA inspector observed the engine removal from the accident airplane and reinstallation on another Cessna 150. This was done to facilitate an engine run. The engine mounts were broken and an engine run could not be conducted on the accident airplane. The original carburetor was reassembled and reinstalled. The engine was primed and the propeller was rotated by hand. An unsuccessful first attempt was made to start the engine. The engine was primed and the propeller was rotated by hand again. The engine started and ran for 1 minute at 1,700 rpm. The test run was terminated due to a leak of the oil filter screen housing. No indications of mechanical or electrical problems were noted with the engine.
The student pilot's inadequate preflight planning which included improper fuel consumption calculations that led to fuel exhaustion and loss of engine power during takeoff.
Source: NTSB Aviation Accident Database
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