Incident Summary
After a normal takeoff, the airplane experienced a gradual loss of engine power during the initial climb. While maneuvering to avoid houses, the airplane struck power lines and subsequently impacted terrain. The accident occurred on the airplane's first flight following an annual inspection.
Aircraft Information
Log book examination revealed that during the annual inspection, the carburetor was removed and disassembled. The two-piece venturi was replaced with a one-piece venturi in accordance with Precision Airmotive Service Bulletin # MSA-2. The airplane had not been flown for over a month prior to the accident. Automotive gasoline was used as fuel under a Supplemental Type Certificate.
Investigation Findings
On-scene examination of the airplane found no evidence of a preimpact failure of the airframe or engine. An engine run-up and carburetor tear-down and flow check did not disclose any evidence of malfunction. The pilot had checked the carburetor heat before takeoff but did not report engaging it after the engine started losing power.
Weather Conditions
At an airport located about 21 miles southeast of the accident site, the wind was reported from 200 degrees at 11 knots gusting to 17 knots. The temperature was 34°F and the dew point was 23°F. According to icing probability charts, conditions were conducive to possible carburetor icing; however, carburetor icing was not verified.