ASN Wikibase Occurrence # 287274
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.
Date: | Sunday 4 November 2012 |
Time: | 12:30 LT |
Type: | Bailey-Moyes Dragonfly C |
Owner/operator: | Central Ohio Dragonfly Club, LLC |
Registration: | N667DF |
MSN: | C-88 |
Year of manufacture: | 2006 |
Total airframe hrs: | 367 hours |
Engine model: | Rotax 582 |
Fatalities: | Fatalities: 0 / Occupants: 1 |
Aircraft damage: | Substantial |
Category: | Accident |
Location: | Darbyville, Ohio -
United States of America
|
Phase: | Initial climb |
Nature: | Unknown |
Departure airport: | Darbyville, OH (KPVT) |
Destination airport: | Darbyville, OH (KPVT) |
Investigating agency: | NTSB |
Confidence Rating: | Accident investigation report completed and information captured |
Narrative:The accident occurred during an aero-tow of a hang glider. The pilot reported that during initial climb, about 80 feet above the runway, the airplane experienced a sudden and total loss of engine power while it was in a climbing left turn. He stated that the airplane immediately entered an aerodynamic stall/spin following the loss of engine power. The pilot released the towed hang glider, but he was unable recover from the aerodynamic stall condition before the airplane impacted terrain. A postaccident examination of the two-cylinder engine revealed excessive piston scoring within one of the cylinder assemblies and excessive wear on the piston wrist-pin. The observed anomalies were consistent with a cold-seizure event. A cold-seizure event is a thermo-imbalance condition between the piston and cylinder, which results in an insufficient clearance between the piston and the cylinder. The cylinder thermo-imbalance condition is typically the result of an insufficient engine warm-up period before takeoff power is applied. However, the conditions that led to the cold-seizure event may not have been limited to the accident flight. The total loss of engine power during initial climb, while towing a hang glider, likely contributed to the aerodynamic stall/spin encountered at a low altitude. Additionally, the low altitude at which the aerodynamic stall/spin was encountered was likely insufficient to have allowed a recovery before the airplane impacted terrain.
Probable Cause: The total loss of engine power due to a cold-seizure event that occurred at a low altitude, which precluded the pilot's recovery from an inadvertent aerodynamic stall/spin.
Accident investigation:
|
| |
Investigating agency: | NTSB |
Report number: | CEN13LA055 |
Status: | Investigation completed |
Duration: | 1 year and 11 months |
Download report: | Final report |
|
Sources:
NTSB CEN13LA055
Location
Revision history:
Date/time | Contributor | Updates |
04-Oct-2022 09:14 |
ASN Update Bot |
Added |
The Aviation Safety Network is an exclusive service provided by:
CONNECT WITH US:
©2024 Flight Safety Foundation