ASN Wikibase Occurrence # 145836
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| Date: | Friday 25 May 2012 |
| Time: | 15:36 |
| Type: |  Mooney M20J 201 |
| Owner/operator: | Private |
| Registration: | N2159D |
| MSN: | 24-0547 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 4865 hours |
| Engine model: | Lycoming IO-360-A3B6D |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Near Ozark Regional Airport - KBPK, in Mountain Home, AR -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Tulsa, OK (TUL) |
| Tunica, MS (UTA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, during cruise flight, he noticed a change in engine sound and that he subsequently scanned the engine gauges, which were all within normal operating parameters. Shortly after, the engine rpm began to drop, the pilot heard a “pop” or “bang,” and the propeller stopped rotating. The pilot attempted to glide the airplane to an alternate airport, but the airplane overshot the runway. The pilot then attempted to land on a nearby road, and the left wing of the airplane struck the ground during the maneuver.
Oil streaking was observed on the airplane’s exterior. Postaccident examination of the engine revealed that no oil was not present in the engine. During disassembly of the engine, the No. 4 connecting rod cap was found fractured, and pieces of the cap were found within the crankcase. Evidence indicated that the No. 4 connecting rod failed due to frictional heating and impact associated with a bearing failure. The Nos. 1 to 3 connecting rods and connecting rod bolts showed varying degrees of heat discoloration, and the evidence of heating in the Nos. 2 and 4 connecting rods indicated that the No. 4 bearing failure was due to lack of oil in the connecting rod bearings. The cause of the oil starvation could not be determined.
Probable Cause: The failure of a connecting rod due to oil starvation.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://ktul.com/story/18628945/small-tulsa-plane-crashes-in-arkansas
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=2159D&x=15&y=11
http://www.mtnhome.net/airport/
http://www.airport-data.com/images/aircraft/small/000/006/006761.jpg (photo)
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-May-2012 01:17 | gerard57 | Added |
| 26-May-2012 10:07 | Geno | Updated [Time, Aircraft type, Cn, Operator, Location, Departure airport, Destination airport, Source] |
| 27-May-2012 04:06 | RobertMB | Updated [Aircraft type, Operator, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:41 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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