ASN Wikibase Occurrence # 289537
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| Date: | Tuesday 15 February 2011 |
| Time: | 09:30 LT |
| Type: |  Beechcraft E90 King Air |
| Owner/operator: | D-w Corporation |
| Registration: | N51DN |
| MSN: | LW-7 |
| Year of manufacture: | 1972 |
| Total airframe hrs: | 9353 hours |
| Engine model: | P&W Canada PT6A-27-28 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Des Moines, Iowa -
 United States of America
|
| Phase: | En route |
| Nature: | Test |
| Departure airport: | Des Moines International Airport, IA (DSM/KDSM) |
| Des Moines International Airport, IA (DSM/KDSM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane had recently undergone maintenance, which included an inspection of the ailerons requiring removal, reinstallation, and a functional check. Prior to the test flight, the pilot performed a pre-flight inspection of the airplane and a flight control free and correct check with no anomalies noted. While executing a turn at flight level 180, the right aileron departed the airplane. The airplane landed without further incident. Examination of the airplane revealed the inboard and middle airframe aileron hinge brackets were attached to the aft spar, intact, and showed no visible damage. The outboard airframe aileron hinge bracket was pulled and separated from the aft spar. The aileron was not located. Based on the condition of the hinge brackets, the evidence indicated the aileron bolts were not properly engaged in the aileron nut plates which caused the bolts to fall out and the aileron to depart the airplane.
Probable Cause: The improper installation of the right aileron by maintenance personnel.
Accident investigation:
 |
|
Sources:
NTSB CEN11LA192
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Oct-2022 14:59 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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