ASN Wikibase Occurrence # 215588
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| Date: | Saturday 22 September 2018 |
| Time: | 15:15 LT |
| Type: |  Beechcraft V35 Bonanza |
| Owner/operator: | DAH Aircraft LLC |
| Registration: | N435RB |
| MSN: | D-8355 |
| Year of manufacture: | 1966 |
| Total airframe hrs: | 6044 hours |
| Engine model: | Continental IO-520-BA2 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Georgetown County Airport (KGGE), Georgetown, SC -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Georgetown Airport, SC (GGE/KGGE) |
| Georgetown Airport, SC (GGE/KGGE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While approaching the airport for landing during an instructional flight, the airplane entered an uncommanded yaw and roll to the right and began to pitch up. The flight instructor was able to maintain some control of the airplane by applying left rudder, left aileron, and forward elevator pressure, and trimming the airplane nose-down. The instructor noticed that the airplane's right yaw increased as the airplane's speed decreased, and it became "impossible" to maintain alignment with the runway centerline. Upon touching down on the runway, the airplane immediately veered to the right about 90° and collided with trees, resulting in substantial damage to the firewall, fuselage, and both wings.
Examination of the flight control system revealed that the left seat's left rudder pedal arm clevis was fractured in multiple sections. Metallurgical examination identified cracks and voids created during the casting (manufacturing) process. The presence of these voids, cracks, and oxide layers reduced the cross-sectional area that could withstand the force applied over the pedal arm clevises. Once a high enough load input was applied to the pedal arm, the remaining material fractured in overstress. The separation of the pedal arm from the pushrod subsequently resulted in a failure of the rudder control system. Review of the airframe logbooks revealed that the rudder pedal arm was original to the airplane and had accrued a total of 6,203.62 flight hours.
Probable Cause: A loss of directional control during landing due to overstress failure of the left seat's left rudder pedal arm clevis, which occurred as a result of manufacturing defects.
Accident investigation:
 |
|
Sources:
NTSB ERA18LA258
Location
Media:
No injuries when plane hits trees at Georgetown Airport https://t.co/MhnBiM16BX
— GAB News (@GABNews2) 23 septembre 2018
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Sep-2018 21:54 | Geno | Added |
| 24-Sep-2018 14:00 | Iceman 29 | Updated [Embed code] |
| 08-Jul-2022 19:01 | ASN Update Bot | Updated [Time, Aircraft type, Total occupants, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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