Summary
On July 02, 2003, a Piper PA-24 (N6315P) was involved in an incident near Winamac, IN. All 5 people aboard were uninjured. The aircraft sustained substantial damage.
The National Transportation Safety Board determined the probable cause of this incident to be: A loss of engine power due to the improper installation of the crankshaft gear due to the omission of the retaining bolt and subsequent shear failure of the anti-rotation pin. The unsuitable terrain encountered, and the rough field were factors.
On July 2, 2003, at 1008 central daylight time, a Piper PA-24, N6315P, piloted by an airline transport pilot, sustained substantial damage during a forced landing following an in-flight loss of engine power near Winamac, Indiana. Visual meteorological conditions prevailed at the time of the accident. The pilot and his four passengers reported no injuries. The 14 CFR Part 91 personal flight was operating on an IFR flight plan. The flight departed from Plymouth, Michigan, at 0819, with an intended destination of Perryville, Missouri.
The airplane's engine stopped producing power during cruise flight. The pilot was given radar vectors to the Arens Field Airport (RWN), Winamac, Indiana.
This incident is documented in NTSB report CHI03LA187. AviatorDB cross-references NTSB investigation data with FAA registry records to provide comprehensive safety information for aircraft N6315P.
Accident Details
Probable Cause and Findings
A loss of engine power due to the improper installation of the crankshaft gear due to the omission of the retaining bolt and subsequent shear failure of the anti-rotation pin. The unsuitable terrain encountered, and the rough field were factors.
Aircraft Information
Registered Owner (Historical)
Analysis
On July 2, 2003, at 1008 central daylight time, a Piper PA-24, N6315P, piloted by an airline transport pilot, sustained substantial damage during a forced landing following an in-flight loss of engine power near Winamac, Indiana. Visual meteorological conditions prevailed at the time of the accident. The pilot and his four passengers reported no injuries. The 14 CFR Part 91 personal flight was operating on an IFR flight plan. The flight departed from Plymouth, Michigan, at 0819, with an intended destination of Perryville, Missouri.
The airplane's engine stopped producing power during cruise flight. The pilot was given radar vectors to the Arens Field Airport (RWN), Winamac, Indiana. The pilot was not able to reach RWN and executed a forced landing in a rough plowed field.
A postaccident examination was conducted by the Federal Aviation Administration. During the initial examination of the airplane's engine, valve train continuity could not be established. Rotation of the crankshaft produced no movement of the valve train components. A subsequent examination of the accessory section of the engine revealed that the crankshaft gear retaining bolt was missing and the gear's anti-rotation pin was sheared. The oil pan of the engine was examined and no bolt was found. The crankshaft gear retaining bolt was not found within the engine.
A review of the maintenance records revealed that the engine was last overhauled on April 6, 1986, and had accumulated 522 hours time in service since the overhaul. No subsequent logbook entries were noted that indicated removal of the crankshaft gear or retaining bolt.
Data Source
Data provided by the National Transportation Safety Board (NTSB). For more information on this event, visit the NTSB Records Search website. NTSB# CHI03LA187