ASN Wikibase Occurrence # 34706
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| Date: | Friday 19 January 1996 |
| Time: | 22:47 LT |
| Type: |  Beechcraft E55 Baron |
| Owner/operator: | Sturdy Welding Equipment Co. |
| Registration: | N4088A |
| MSN: | TE-793 |
| Engine model: | Continental IO-520-C |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Cedarville, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Everrett, WA (KPAE) |
| North Las Vegas, NV | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot was operating on a VFR on top IFR clearance when he inadvertently encountered a mountain wave condition while flying in a dark moonless night. The radar data showed that the airplane began a 612 FPM descent for 1,000 feet and then abruptly climbed 300 feet before the airplane's transponder code disappeared from the sector controllers radar screen. The pilot did not make any radio transmissions during the accident sequence of events. The airplane crashed in a vertical nose-down attitude into a lake and was buried about 20 feet in the muddy silt terrain. The wreckage examination disclosed no evidence of an in-flight breakup or any preexisting airplane malfunctions or failures.
Probable Cause: the pilot's poor preflight planning by not obtaining a weather briefing and his inadvertent encounter with a mountain wave condition. The moonless dark night was a factor in this accident.
Accident investigation:
 |
|
Sources:
NTSB LAX96FA096
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 06-Jun-2023 06:23 | Ron Averes | Updated |
| 09-Apr-2024 08:30 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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