ASN Wikibase Occurrence # 202109
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| Date: | Saturday 3 April 1999 |
| Time: | 20:31 LT |
| Type: |  Piper PA-32R-301 |
| Owner/operator: | Assist Business Services Inc |
| Registration: | N9254Q |
| MSN: | 3246001 |
| Total airframe hrs: | 675 hours |
| Engine model: | Lycoming IO-540K1G5 |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Warner Springs, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Deer Valley, AZ (KDVT) |
| Carlsbad, CA (KCRQ) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane impacted terrain following an uncontrolled descent. The horizontal stabilator and the left wing separated while the airplane was in a descending right turn on the downwind side of a mountain. The pilot received a full preflight weather briefing and updated that with an abbreviated briefing prior to takeoff. The briefings included a forecast for moderate to severe turbulence and icing along the route of flight. While en route, the pilot experienced icing conditions and requested a lower altitude. He received pilot reports while en route that indicated icing conditions were being encountered in the area of his destination. The airplane was not equipped with anti-icing or deicing equipment. A Safety Board weather study identified conditions that were conducive for clouds, turbulence, wind shear, icing, and mountain wave activity.
Probable Cause: The pilot disregarded his weather briefing and attempted flight into areas of forecast and reported icing and moderate to severe turbulence. The airplane encountered mountain wave activity resulting in an overload condition and in-flight separation of the left wing and stabilator. Mountainous terrain, icing conditions, and turbulence were factors in the accident.
Accident investigation:
 |
|
Sources:
NTSB LAX99FA138
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Nov-2017 12:38 | ASN Update Bot | Added |
| 08-Apr-2024 07:48 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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