Accident Beechcraft B200 Super King Air N586BC, Tuesday 19 January 2010
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Date:Tuesday 19 January 2010
Type:Silhouette image of generic BE20 model; specific model in this crash may look slightly different    
Beechcraft B200 Super King Air
Owner/operator:Blue Cross and Blue Shield of Iowa - BCBS
Registration: N586BC
MSN: BB-1223
Year of manufacture:1985
Total airframe hrs:10304 hours
Engine model:Pratt & Whitney Canada PT6A-42
Fatalities:Fatalities: 0 / Occupants: 4
Other fatalities:0
Aircraft damage: Substantial, written off
Location:Sioux Gateway Airport, IA (SUX) -   United States of America
Phase: Landing
Departure airport:Des Moines Airport, IA (DSM/KDSM)
Destination airport:Sioux Gateway Airport, IA (SUX/KSUX)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
A Beechcraft B200, N586BC, received substantial damage on impact with terrain during landing on runway 31 at Sioux Gateway Airport/Col. Bud Day Field (SUX), Iowa. Instrument meteorological conditions prevailed at the time of the accident. The pilot, copilot, and two passengers were uninjured.

The pilot filed an instrument-flight-rules (IFR) flight plan with the destination and alternate airports, both of which were below weather minimums. The pilot and copilot departed from Des Moines Airport in weather minimums that were below the approach minimums for the departure airport. While en route, the destination airport's automated observing system continued to report weather below approach minimums, but the flight crew continued the flight. The flight crew then requested and were cleared for the instrument landing system (ILS) 31 approach and while on that approach were issued visibilities of 1,800 feet runway visual range after changing to tower frequency. During landing, the copilot told the pilot that he was not lined up with the runway. The pilot reportedly said, "those are edge lights," and then realized that he was not properly lined up with the runway. The airplane then touched down beyond a normal touchdown point, about 2,800 feet down the runway, and off the left side of the runway surface. The airplane veered to the left, collapsing the nose landing gear.

The company's procedures did not allow flight crew to depart to an airport that was below minimums but did allow for the flight crew, at their discretion, to perform a "look-see" approach to approach minimums if the weather was below minimums. The allowance of a "look see" approach essentially negates the procedural risk mitigation afforded by requiring approaches to be conducted only when weather was above approach minimums.

PROBABLE CAUSE: "The flight crew's decision to attempt a flight that was below takeoff, landing, and alternate airport weather minimums, which led to a touchdown off the runway surface by the pilot-in-command."

Accident investigation:
Investigating agency: NTSB
Report number: CEN10LA105
Status: Investigation completed
Duration: 9 months
Download report: Final report




photo (c) NTSB; Sioux Gateway Airport, IA (SUX); 19 January 2010; (publicdomain)

photo (c) NTSB; Sioux Gateway Airport, IA (SUX); 19 January 2010; (publicdomain)

photo (c) NTSB; Sioux Gateway Airport, IA (SUX); January 2010; (publicdomain)

photo (c) NTSB; Sioux Gateway Airport, IA (SUX); January 2010; (publicdomain)

Revision history:


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