ASN Wikibase Occurrence # 366985
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| Date: | Monday 14 May 1990 |
| Time: | 14:00 LT |
| Type: |  Beechcraft A35 |
| Owner/operator: | Edw. Winchester & John Bassett |
| Registration: | N511B |
| MSN: | D-1532 |
| Total airframe hrs: | 3840 hours |
| Engine model: | CONTINENTAL E-185-8 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Washington, MO -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Augusta, KS |
| Washington, MO | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
FLUTTER OF THE EMPENNAGE OCCURRED DURING FLIGHT IN SMOOTH AIR, RESULTING IN SUBSTANTIAL DAMAGE TO THE AFT FUSELAGE & BULKHEADS NEAR THE RUDDERVATOR ATTACHMENT POINTS. POST-ACCIDENT TESTS DISCLOSED THE STATIC BALANCE OF BOTH RUDDERVATORS TO BE EXCESSIVELY TAIL-HEAVY. THERE WAS EVIDENCE THAT THE RUDDERVATOR SURFACES HAD LAST BEEN PAINTED, WHILE STILL ATTACHED TO THE AIRPLANE. THICKNESS OF THE PRIMER & PAINT EXCEEDED THE MANUFACTURER'S FACTORY ACCEPTANCE CRITERIA.
Probable Cause: IMPROPER STATIC BALANCE OF THE RUDDERVATORS FOLLOWING REBUILDING/REPAINTING, WHICH RESULTED IN EMPENNAGE FLUTTER.
Accident investigation:
 |
|
Sources:
NTSB MKC90FA107
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 06:23 | ASN Update Bot | Added |
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