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N739JN accident description

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Crash location 26.241389°N, 80.106389°W
Nearest city Pompano Beach, FL
26.237860°N, 80.124767°W
1.2 miles away
Tail number N739JN
Accident date 01 Nov 2011
Aircraft type Cessna 172N
Additional details: None

NTSB Factual Report

On November 1, 2011, at 1735 eastern daylight time, a Cessna 172N, N739JN, was substantially damaged during a forced landing following a partial loss of engine power while on final approach to Pompano Beach Airpark (PMP), Pompano Beach, Florida. The certificated commercial pilot and one passenger reported minor injuries. The personal flight was operating under the provisions of Title 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from Fort Lauderdale Executive Airport (FXE), Fort Lauderdale, Florida, at 1730.

The pilot stated that he was descending on final approach to land, when the throttle control became unresponsive. He made attempts to change the engine power setting, but no change in power occurred. The engine remained at idle speed as the airplane continued to descend. He made a forced landing on a road and the airplane collided with a light post.

Post accident examination of the airplane by a Federal Aviation Inspector revealed that the fuselage collided with a light post and broke away from the cabin section. The left wing outboard section was broken away from the wing assembly at the wing strut. The wreckage was recovered and a cursory examination was conducted on the engine. No engine specific mechanical anomalies were discovered that would have precluded normal engine operation. Further examination revealed that the outer throttle cable housing was separated. When the throttle control was moved, it did not actuate the carburetor throttle control. A review of the maintenance records did not reveal any recent maintenance to the cable and during the last annual inspection no anomalies were noted.

A review of the aircraft and engine logbooks revealed that the throttle cable was not replaced or inspected within the last 2512.9 hours. A review of the Cessna model 172 service manual states, on page 2-42, item J: “Engine controls and linkage-check general condition, freedom of movement through full range. Check for proper travel, security of attachment, and evidence of wear. Check friction locks for proper operation (every 50 hours).” Page 2-48 of the manual, special inspections legends, part E; states, “Lubricate each 50 hours, these controls are not repairable and should be replaced every 1,500 hours or whenever maximum linear movement exceeds .050 inches.”

NTSB Probable Cause

The separation of the throttle cable from its fitting, which resulted in an inability to control engine power. Contributing to the accident was the inadequate maintenance by the owner.

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