ASN Wikibase Occurrence # 274117
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| Date: | Thursday 13 January 2022 |
| Time: | 13:26 |
| Type: |  Cirrus SR22 |
| Owner/operator: | Ridgeland Partners LLC |
| Registration: | N879CD |
| MSN: | 0292 |
| Year of manufacture: | 2002 |
| Total airframe hrs: | 2420 hours |
| Engine model: | Continental IO-550-N |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lake Murray, near Lexington, SC -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Greenville Downtown Airport, SC (GMU/KGMU) |
| Charleston International Airport, SC (CHS/KCHS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On January 13, 2022, about 1326 eastern standard time, a Cirrus SR-22, N879CD, was substantially damaged when it was involved in an accident near Lexington, South Carolina. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.
The pilot reported that during cruise flight the oil annunciator light illuminated, the oil pressure decreased to zero, and the engine tachometer neared its maximum limit. Soon thereafter, the engine lost power. During the forced landing, the pilot activated the whole airplane parachute system at an altitude of about 2,000 ft above ground level. The airplane descended via the parachute and landed upright in a lake. The pilot and passenger were able to swim to shore and were not injured. The airplane’s fuselage and left elevator were substantially damaged during the landing.
Postaccident examination of the engine revealed that all of the crankshaft connecting rod journals showed evidence of lubrication distress. Additionally, the No. 3 main journal bearing shifted, resulting in the blockage of the oil ports and elongation of the crankcase lock slot. The No. 6 connecting rod bearing was fused to the crankshaft journal. The No. 1 cylinder rod bearings were fused together on the crankshaft, and the bearing surface was smeared and torn. The bearing metal melted and re-solidified along the edges.
It is likely that the shift of the No. 3 main journal bearing blocked the oil port and restricted oil to the engine and propeller, resulting in destruction of the bearing of the No. 6 cylinder. This likely resulted in the fracture of the connecting rod, breach of the crankcase, and the catastrophic failure of the engine. The engine overspeed reported by the pilot is consistent with a loss of oil pressure to the propeller governor, which would have lowered the blade pitch and increased engine rpm.
Review of maintenance logbook records revealed the No. 2 cylinder was replaced about 500 hours before the accident flight, at which time the engine had accumulated about 2,420 hrs. It is possible that the crankcase thru bolts were incorrectly torqued after the No. 2 cylinder change about 500 hours before the accident flight, which could have resulted in a shift of the No. 3 main journal bearing
Probable Cause: A loss of engine power due to a shift of the No. 3 main journal bearing, which resulted in blocked oil ports that restricted oil to the engine’s internal components and a subsequent catastrophic engine failure.
Accident investigation:
 |
|
Sources:
https://www.abccolumbia.com/2022/01/14/witness-to-plane-crash-in-lake-murray-describes-what-he-saw/
https://www.wistv.com/2022/01/13/plane-crashes-into-lake-murray-officials-scene/
https://data.ntsb.gov/Docket?ProjectID=104526
https://flightaware.com/live/flight/N879CD/history/20220113/1759Z/KGMU/L%2034.02334%20-81.38277
https://globe.adsbexchange.com/?icao=ac17fb&lat=34.021&lon=-81.385&zoom=15.4&showTrace=2022-01-13&trackLabels×tamp=
https://cdn.jetphotos.com/full/4/67536_1366073121.jpg (photo)
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Jan-2022 21:16 | Geno | Added |
| 13-Jan-2022 23:16 | RobertMB | Updated [Aircraft type, Operator, Location, Phase, Nature, Source, Damage, Narrative] |
| 14-Jan-2022 00:51 | johnwg | Updated [Time, Aircraft type, Registration, Cn, Operator, Departure airport, Destination airport, Source, Category] |
| 14-Jan-2022 05:11 | RobertMB | Updated [Departure airport, Source, Narrative] |
| 15-Jan-2022 01:11 | Captain Adam | Updated [Narrative] |
| 17-Jan-2022 19:33 | sdbeach | Updated [Registration, Cn, Operator, Phase, Nature, Departure airport, Source, Damage] |
| 18-Jan-2022 17:57 | RobertMB | Updated [Time, Operator, Location, Source, Damage, Narrative] |
| 20-Sep-2022 16:30 | Captain Adam | Updated [Time, Location, Destination airport, Source, Narrative, Category] |
| 21-Sep-2023 00:03 | Captain Adam | Updated [[Time, Location, Destination airport, Source, Narrative, Category]] |
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