ASN Wikibase Occurrence # 40717
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| Date: | Sunday 28 February 1999 |
| Time: | 11:15 LT |
| Type: | Keil JAEGER D-IX |
| Owner/operator: | John J. Keil |
| Registration: | N257JK |
| MSN: | 123 |
| Total airframe hrs: | 664 hours |
| Engine model: | Continental O-200-A |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Santa Fe, TX -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Hitchcock, TX (37R) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The amateur-built experimental biplane impacted the ground in a vertical attitude following the in flight separation of the right upper and lower wings. The right wings came to rest about 275 yards from the main wreckage. The right upper aileron separated from the right upper wing and came to rest about 65 feet from the right wings. Examination of the three fractured rod ends, which were used to attach the aileron to the wing, indicated that the rod ends failed as a result of overload. The right lower aileron remained attached to the right lower wing. The rod that connected the right upper and lower ailerons was not recovered; however, pieces of the rod remained bolted to each aileron. Visual examination of the fracture surfaces on the rod pieces revealed no evidence of fatigue cracking. The top and bottom aileron cables for the right upper aileron were separated, and the separated ends displayed a 'horsetail' appearance, indicative of overload failure. No evidence of contact between the aileron leading edges and the wing trailing edges was noted. The reason for the separation of the right upper aileron could not be determined.
Probable Cause: The separation of the right upper aileron for an undetermined reason.
Accident investigation:
 |
|
Sources:
NTSB FTW99LA086
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 26-Nov-2017 10:01 | ASN Update Bot | Updated [Operator, Destination airport, Source, Narrative] |
| 08-Apr-2024 09:12 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Destination airport, Source, Narrative, Category, Accident report] |
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