ASN Wikibase Occurrence # 287427
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| Date: | Friday 31 August 2012 |
| Time: | 10:40 LT |
| Type: |  Beechcraft G35 |
| Owner/operator: | |
| Registration: | N4454D |
| MSN: | D-4598 |
| Total airframe hrs: | 5857 hours |
| Engine model: | Continental E225 -8 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Oceano, California -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Tulare Airport, CA (TLR/KTLR) |
| Oceano, CA (L52) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, while the airplane was descending to land at an indicated airspeed of about 180 mph, it encountered turbulence for about 2 seconds. The pilot immediately reduced power and slowed the airplane to about 140 mph. The pilot continued the approach and landed the airplane without further incident. After landing, the pilot observed deformities along the fuselage.
A postaccident examination of the airplane revealed structural twisting damage to the aft fuselage, consistent with an overload failure in a tail downward direction. According to the airplane manufacturer, the damage was also consistent with damage seen on other airplanes of the same make and model that had encountered turbulence while descending at speeds higher than the airplane's design maneuvering speed. A review of the Pilot's Operating Handbook showed that the airplane's reported airspeed of 180 mph at the time it encountered the turbulence was within the caution operating range of 176 to 202 mph and was higher than the design maneuvering speed. It is likely that the pilot's exceedance of the design maneuvering speed while the airplane was descending in turbulence resulted in the structural damage to the aft fuselage.
Probable Cause: The pilot's exceedance of the design maneuvering speed during descent in turbulence, which resulted in structural damage to the aft fuselage.
Accident investigation:
 |
|
Sources:
NTSB WPR12LA396
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 10:46 | ASN Update Bot | Added |
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