NTSB Identification: CHI04LA061.
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Accident occurred Saturday, January 24, 2004 in Prairieville, MI
Probable Cause Approval Date: 09/01/2004
Aircraft: Aeronca 7AC, registration: N1087E
Injuries: 1 Serious,1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The airplane impacted three transmission lines while on final approach to a frozen lake. The accident occurred when a flight of two airplanes was attempting to land. The accident airplane was following the other airplane during the final approach to the lake. The pilot of the preceding airplane announced over the radio "watch for wires" just prior to a successful landing. The accident pilot stated his airplane's landing skis caught all three transmission wires as he attempted to climb away from the obstacle. He reported the landing skis collapsed during the subsequent hard landing and the airplane slid nose-down for approximately 100 feet. The transmission wires were not marked and their support poles were positioned in a forested area adjacent to the lakeshore.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's failure to maintain altitude/clearance from the transmission wires during final approach. Factors to the accident were the unmarked transmission wires and their support poles.

Full narrative available

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