ASN Wikibase Occurrence # 194422
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| Date: | Saturday 25 March 2017 |
| Time: | 14:00 |
| Type: |  Cessna 182P Skylane |
| Owner/operator: | Avcenter Inc. |
| Registration: | N52743 |
| MSN: | 18262813 |
| Year of manufacture: | 1974 |
| Total airframe hrs: | 12213 hours |
| Engine model: | Continental O-520U/TS |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Shelly Mountain, SW of Mackay, ID -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Nampa, ID (MAN) |
| Nampa, ID (MAN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, while flying in mountainous terrain around 9,500 ft mean sea level (700 to 1,200 ft above the ground), the airplane encountered a downdraft. He added that he immediately turned away from the mountainside in a right turn, added full power, selected 10º of flaps, and pitched the nose up to maintain the airplane’s maximum angle-of-climb airspeed (Vx). Subsequently, the airplane was unable to climb, and it then impacted wooded, snow-covered terrain along the mountainside.
The fuselage and both wings sustained substantial damage.
The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The calculated density altitude near the flightpath was about 10,339 ft. According to the Federal Aviation Administration Koch Chart, the airplane would have experienced a 50% decrease to the normal climb rate. The high-density altitude conditions likely contributed to the airplane’s inability to establish a climb.
Probable Cause: The pilot's decision to maneuver the airplane over mountainous terrain in high-density altitude conditions, which resulted in the airplane’s inability to maintain altitude or establish a climb.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=52743
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Mar-2017 15:08 | Geno | Added |
| 27-Mar-2017 15:12 | Geno | Updated [Date] |
| 19-Aug-2017 16:16 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
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