ASN Wikibase Occurrence # 357739
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| Date: | Thursday 22 February 1996 |
| Time: | 17:00 LT |
| Type: |  Beechcraft 35 |
| Owner/operator: | Private |
| Registration: | N3134V |
| MSN: | D-566 |
| Year of manufacture: | 1947 |
| Total airframe hrs: | 4183 hours |
| Engine model: | Continental E-225-8 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Griffin, GA -
 United States of America
|
| Phase: | Unknown |
| Nature: | Executive |
| Departure airport: | Orlando, FL (KMCO) |
| (6A2) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Flutter of the empennage occurred as the airplane was descending through 8,000 feet at 120 mph. The flutter subsided when the pilot reduced engine power, and he subsequently landed without incident. Examination of the empennage disclosed that the bulkhead at fuselage station (FS) 256.9 exhibited cracks at the four corners of the assembly. Also, buckling of the fuselage skin was noted adjacent to the damaged bulkhead. The ruddervators, which previously had been reskinned, painted, and balanced, were removed from the airframe and balance checked in accordance with the Bonanza 35 Series Shop Manual. The left and right ruddervators exhibited static underbalance moments (trailing edge heavy) of 20.78 and 21.76 inch-pounds, respectively. According to the shop manual, the required static underbalance range is 16.80 to 19.80 inch pounds.
Probable Cause: failure of maintenance personnel to properly balance the ruddervator assemblies after they had been reskinned and painted, which resulted in flutter and subsequent damage to the empennage.
Accident investigation:
 |
|
Sources:
NTSB ATL96LA132
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Mar-2024 06:07 | ASN Update Bot | Added |
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