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N1120B accident description

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Crash location 43.105000°N, 86.123611°W
Nearest city Fruitport, MI
43.131962°N, 86.154775°W
2.4 miles away
Tail number N1120B
Accident date 01 May 2007
Aircraft type Luscombe 8A
Additional details: None

NTSB Factual Report

On May 1, 2007, about 1715 eastern daylight time, a Luscombe 8A, N1120B, was substantially damaged during a forced landing to a field following a loss of engine power during take off from the Flying-A-Ranch Airport (39Z), Fruitport, Michigan. The certificated flight instructor (CFI) and dual student received serious injuries. The 14 Code of Federal Regulations Part 91 instructional flight departed 39Z about 1715 for a local flight. Visual meteorological conditions prevailed at the time of the accident. No flight plan was filed.

The CFI reported he had flown the airplane for about 45 minutes with another pilot and had shut the airplane down in order to switch pilots. Prior to takeoff on the accident flight, the CFI got in the left seat and the dual student pilot got in the right seat. According to the CFI, the main body fuel tank had just less than 3/4 of a tank of fuel [10.5 gallons] and the wing tank had 6-7 gallons of fuel. The CFI taxied the airplane for takeoff, and after the engine run-up was completed, departed from runway 9. During the climb out the engine lost power. The CFI lowered the nose to establish a glide speed about 65 - 70 mph, and executed a forced landing to a blueberry field. He applied carburetor heat, switched magnetos, and pumped the throttle but with no effect. The CFI saw power line wires and tried to avoid them by going under the wires, but the airplane's right wing hit a power line pole. The airplane rotated to the right and landed in the ditch next to a road. The CFI was able to crawl out of the wreckage, but rescue personnel extracted the dual student from the airplane.

The engine was shipped to Teledyne Continental Motors (TCM) in Mobile, Alabama, for inspection. The engine was put on an engine test stand and an engine run was conducted. The engine run revealed that the engine met TCM operational specifications.

The maximum gross weight of the airplane was 1,260 pounds. The empty weight of the airplane was about 736 pounds. The weight of the pilot was about 255 pounds, and the weight of the dual student was about 220 pounds.

The 1655 surface weather observation at the Muskegon County Airport (MKG), Muskegon, Michigan, located 6 miles northwest of 39Z, indicated that the temperature was 16 degrees Celsius and the dew point was 12 degrees Celsius.

The Transport Canada carburetor-icing chart indicated "Serious icing - any power" with a temperature of 16 degrees Celsius and a dew point of 12 degrees Celsius.

The mechanic who conducted the airplane's annual inspection five months earlier and who received dual instruction in the airplane before the accident flight stated that he encountered carburetor icing while taxiing and while in cruise flight. A placard located next to the carburetor heat lever on the instrument panel stated the following: "Full Carburetor Air Heat Required for Takeoff and Landing." The placard was originally intended to correct fuel flow problems in early model 8As with single fuselage fuel tanks (during takeoffs with high pitch attitudes). A review of two Luscombe owners handbooks from the late 1940s and early 1950s found guidance recommending full carburetor heat for takeoffs and landings for all Luscombe models to prevent engine power loss caused by carburetor ice.

NTSB Probable Cause

The flight instructor failed to use carburetor heat during takeoff in icing conditions. A factor was the power line pole.

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