Accident Cirrus SR22 GTS N323SR, 02 Jan 2020
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ASN Wikibase Occurrence # 231877
 
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Date:02-JAN-2020
Time:10:25
Type:Silhouette image of generic SR22 model; specific model in this crash may look slightly different    
Cirrus SR22 GTS
Owner/operator:Cornerstone Aviation LLC
Registration: N323SR
MSN: 2271
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:Kenansville, NC -   United States of America
Phase: En route
Nature:Private
Departure airport:Worcester Airport, MA (ORH/KORH)
Destination airport:Elizabethtown-Curtis L Brown Jr Field, NC (KEYF)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The pilot reported that, during a cross-country flight, he heard a pop from the engine, and it subsequently stopped producing power; however, the engine continued to run, and the propeller continued to rotate. The pilot attempted to troubleshoot the loss of power; however, power was not restored. Subsequently, the pilot activated the airplane’s parachute system and the airplane impacted trees and terrain, resulting in substantial damage to the airframe.

Postacccident examination of the engine revealed that the camshaft fractured at one of its four oil transfer holes. As a result, camshaft continuity was lost, and the engine was partially unable to produce power. Forensic examination of the fracture surface revealed that the fracture occurred due to fatigue that initiated from a burr at the corner of an oil transfer hole. The extent of fatigue crack growth through the cross-section suggested the overall torsion load on the camshaft was relatively low as the crack grew. However, a burr at the edge of a hole is a feature that is known to reduce component fatigue life. The burr was deformed and coated, consistent with forming during a peening operation and before the manganese phosphate coating had been applied. A similar burr was also observed on the adjacent oil transfer hole in the camshaft. The presence of a burr suggests the corner of the hole was not properly broken before the part was peened during manufacturing, leading to deformation of a sharp corner during the peening operation.

Probable Cause: A fatigue failure of the camshaft due to a manufacturing defect, which resulted in a partial loss of engine power.

Sources:

https://www.witn.com/content/news/No-serious-injuries-in-Duplin-County-plane-crash-566653981.html
https://www.wral.com/the-engine-quit-pilot-uses-plane-parachute-to-land-in-duplin-county-woods/18864332/
https://www.facebook.com/wcti12/posts/2607489472632189

NTSB
FAA
https://flightaware.com/live/flight/N323SR
https://www.flickr.com/photos/gregrendell/41560984314 (photo)

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 3 months
Download report: Final report
Location


Images:


Photo: NTSB

Revision history:

Date/timeContributorUpdates
02-Jan-2020 17:55 Geno Added
02-Jan-2020 18:47 Captain Adam Updated [Aircraft type, Operator]
02-Jan-2020 23:52 RobertMB Updated [Time, Aircraft type, Registration, Cn, Total occupants, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative]
15-Oct-2020 23:53 Captain Adam Updated [Narrative]
09-Jun-2021 06:17 aaronwk Updated [Source]
28-Apr-2022 05:10 Captain Adam Updated [Location, Source, Narrative, Category, Accident report, Photo]
28-Apr-2022 05:11 Captain Adam Updated [Narrative]

Corrections or additions? ... Edit this accident description

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