Accident Quicksilver Sprint II N3521A, 19 May 2012
ASN logo
ASN Wikibase Occurrence # 287752
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Time:17:00 LT
Type:Quicksilver Sprint II
Registration: N3521A
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Location:Lebanon, Illinois -   United States of America
Phase: Initial climb
Departure airport:Lebanon, IL (KPVT)
Destination airport:Lebanon, IL (KPVT)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot reported that there were no anomalies during the before-takeoff engine run-up or when he applied power for takeoff. He stated that during the initial climb, about 35 feet above the ground, the engine suddenly lost power. The pilot reported that he reduced pitch in order to maintain airspeed but that the airplane impacted the ground in a nose-low attitude. The airplane immediately nosed over at impact, coming to rest inverted. A postaccident examination of the engine revealed that the crankshaft had fractured at the flywheel/crankshaft interface as a result of fatigue. The fracture originated from a single initiation point on the outer crankshaft surface that coincided with circumferential wear marks indicative of fretting. The observed wear marks matched those found on the flywheel and were likely the result of relative movement between the crankshaft and flywheel. The engine had accumulated 152.9 hours since new.

Probable Cause: The total loss of engine power due to a fatigue failure of the crankshaft, attributed to the relative movement between the crankshaft and flywheel assembly.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 months
Download report: Final report

Revision history:

04-Oct-2022 14:03 ASN Update Bot Added

Corrections or additions? ... Edit this accident description

The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2023 Flight Safety Foundation

701 N. Fairfax St., Ste. 250
Alexandria, Virginia 22314