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ASN Wikibase Occurrence # 17024
Last updated: 19 October 2019
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Type:Silhouette image of generic PC12 model; specific model in this crash may look slightly different
Pilatus PC-12/45
Registration: N770G
C/n / msn: 299
Fatalities:Fatalities: 6 / Occupants: 6
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:near Bellefonte, PA -   United States of America
Phase: Approach
Departure airport:Naples, FL (APF)
Destination airport:State College, PA (UNV)
Investigating agency: NTSB
The accident airplane was on an instrument landing system (ILS) approach to land, when witnesses reported seeing it spinning in a nose down, near vertical attitude before it collided with the ground. The accident site was about 3 miles from the approach end of the intended runway. A review of radar data disclosed that the private pilot had difficulty maintaining altitude and airspeed while on final approach, with significant excursions above and below the glidepath, as well as large variations in airspeed. Interviews with other pilots in the area just prior to and after the accident revealed that icing conditions existed in clouds near the airport, although first responders to the accident site indicated that there was no ice on the airplane. Postaccident inspection of the airplane, its engine and flight navigation systems, discovered no evidence of preimpact anomalies. An analysis of the airplane's navigation system's light bulbs, suggests that the pilot had selected the GPS mode for the initial approach, but had not switched to the proper instrument approach mode to allow the autopilot to lock onto the ILS.

Probable Cause: The pilot's failure to maintain sufficient airspeed to avoid a stall during an instrument final approach to land, which resulted in an inadvertent stall/spin. Factors associated with the accident are the inadvertent stall/spin, the pilot's failure to follow procedures/directives, and clouds.




(c) by Hey Paul, March 26, 2005

Revision history:

02-Apr-2008 12:18 harro Added
02-Apr-2008 12:34 harro Updated
08-Mar-2009 04:52 Topaz Updated
03-Feb-2010 23:36 TB Updated [Other fatalities, Source, Narrative]
21-Dec-2016 19:13 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:14 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:16 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:20 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
06-Dec-2017 08:00 ASN Update Bot Updated [Operator, Nature, Departure airport, Destination airport, Source, Narrative]

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