ASN Wikibase Occurrence # 230935
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| Date: | Thursday 30 August 2018 |
| Time: | 19:00 |
| Type: |  Boeing-Stearman A75N1 |
| Owner/operator: | Private |
| Registration: | N64604 |
| MSN: | 75-6811 |
| Year of manufacture: | 1942 |
| Total airframe hrs: | 5561 hours |
| Engine model: | Continental W670-6A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Kenosha, WI -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Kenosha, WI (ENW) |
| Kenosha, WI (ENW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airline transport pilot had performed three touch-and-go maneuvers without braking. On the fourth and last planned landing roll about 30 mph, the airplane experienced an excessive tailwheel shimmy. About 25 mph, the airplane nosed over and came to rest inverted. Postaccident examination of the airplane revealed that the left main wheel/brake assembly was locked; thus, the wheel/tire could not be rotated. Partial disassembly of the wheel/brake assembly revealed a failed retaining bolt for the brake backing plate and a crack in the backing plate. The bolt likely broke off and became lodged in the assembly; thus, it is likely the failed retaining bolt and cracked backing plate resulted in a shift of the brake lining to contact the brake drum and led to a subsequent wheel lock when the brakes were applied.
Probable Cause: The failed retaining bolt and cracked backing plate, which resulted in a shift of the brake lining to contact the brake drum and a subsequent wheel lock when the brakes were applied.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Nov-2019 07:17 | ASN Update Bot | Added |
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