ASN Wikibase Occurrence # 146805
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| Date: | Wednesday 18 July 2012 |
| Time: | 16:46 |
| Type: |  Piper PA-32R-301 Saratoga II HP |
| Owner/operator: | West Valley Flying Club |
| Registration: | N432LT |
| MSN: | 3213099 |
| Year of manufacture: | 1995 |
| Total airframe hrs: | 3243 hours |
| Engine model: | Lycoming IO-540 SER |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 43 miles north of Fairbanks, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Fort Yukon, AK (PFYU) |
| Fairbanks, AK (PAFA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The noninstrument-rated pilot and one passenger were flying as part of a group of three airplanes on a sightseeing tour. The accident airplane and one of the other airplanes in the group encountered deteriorating weather and made an unplanned stop at an airport along their route of flight. After receiving fuel and updated enroute weather, both pilots decided to depart for their original destination.
During the second attempt to fly to the destination airport, the two airplanes again encountered deteriorating weather conditions. The pilot of the accident airplane decided to maintain visual flight rules, and the pilot of the other airplane requested an instrument flight rules clearance to the destination airport. A short time later, the pilot of the accident airplane contacted air traffic control and stated that he was having difficulty maintaining visual conditions and subsequently requested an instrument clearance. The pilot reported climbing through 6,800 feet for 7,000 feet, then no further communications were received. The wreckage was located on a brush- and tundra-covered hillside; the left wing had separated from the airplane inflight, followed by the separation of other airplane components before impact.
Given the reported weather, the pilot's lack of an instrument rating, his request for an instrument clearance, the wreckage path, and the lack of any mechanical anomalies, it is likely that the pilot encountered instrument meteorological conditions and became spatially disoriented while attempting to climb to a higher altitude. It is also likely that the pilot then lost control of the airplane, and entered a steep spiraling dive from which he was unable to recover. During the dive, the aerodynamic forces increased to the point that the left wing separated from the airplane, which tightened the spiral, and led to the in-flight structural failure of other sections of the airplane.
Probable Cause: The noninstrument-rated pilot's decision to continue visual flight into instrument meteorological conditions likely leading to spatial disorientation, which resulted in a loss of airplane control and in-flight structural failure.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 19-Jul-2012 12:22 | Geno | Added |
| 19-Jul-2012 18:37 | Geno | Updated [Nature, Departure airport, Destination airport, Source] |
| 09-Aug-2012 10:10 | Geno | Updated [Time, Location, Phase, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:56 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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