NTSB Identification: ATL03LA054.
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Accident occurred Sunday, March 16, 2003 in Enterprise, AL
Probable Cause Approval Date: 06/28/2006
Aircraft: Piper PA-28R, registration: N7635J
Injuries: 2 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.

According to the student pilot, while simulating an emergency descent, there was a surge in engine rpm and a significant drop in engine oil pressure. The CFI checked the engine oil pressure and within seconds the engine seized, and by this time the windshield was covered with oil. The certified flight instructor (CFI) diverted to an open wheat field three miles southwest of Enterprise Municipal Airport. During the emergency landing, the airplane touched down but became difficult to control after rollout and the airplane spun 120 degrees to the right, colliding with the terrain. Examination of the aircraft found that the propeller assembly was bent, all three landing gear had collapsed and both wings were damaged in the vicinity of the collapsed landing gear. There was also damage to the fuselage just aft of the baggage compartment. Examination of the engine revealed that there was a crack in the propeller governor external oil line located at the first 90-degree bend radius aft the forward B-nut. A review of the aircraft maintenance log disclosed that the oil line was installed about 30 hours before the accident.

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

The loss of engine power due to oil starvation resulting from a crack in the propeller governor external oil line. A factor was the soft terrain.

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