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Accidents · NTSB WPR12CA112 · Final report

Rockwell International S-2R accident near Yellow Pine, Idaho, February 14, 2012

On February 14, 2012 at about 7:30 pm local time, a Rockwell International S-2R, registered N8433V, was substantially damaged in an accident during landing (landing roll) near Yellow Pine, Idaho (Stibnite Airport). It was an other work-use flight under agricultural flying rules (Part 137). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot did not maintain directional control while landing on a snow-contaminated runway.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
February 14, 2012 · about 7:30 pm local time
Place
Yellow Pine, Idaho · Stibnite Airport · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Rockwell International S-2R · all S-2Rs on the register
Registration
N8433V · registry record · serial 2193R
Damage
Substantial damage
Flight
Other work-use flight · agricultural flying rules (Part 137)

The NTSB's narrative final · quoted from the NTSB record

The pilot reported that he made a normal touchdown in the tailwheel-equipped airplane onto the centerline of the snow packed runway. He said that about halfway down the runway, he applied reverse thrust in an effort to slow the airplane. Shortly after entering reverse, the airplane veered about 5 degrees to the right. The pilot applied left brake and rudder to correct the turn; however, the airplane continued to the right due to the limited braking action on the runway surface. About three-quarters of the way down the runway, the airplane struck an ice chunk and the right main landing gear collapsed. The airplane’s right wing was substantially damaged. The pilot reported no mechanical failures or malfunctions that would have precluded normal operations.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

What happened, in order

  1. Loss of control on ground during landing (landing roll) defining event
  2. Landing gear collapse during landing (landing roll)
  3. Collision with terrain or object (not controlled flight into terrain) during landing (landing roll)

The NTSB's findings

  • cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Directional control › Not attained/maintained
  • cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
  • Environmental issues › Physical environment › Runway/land/takeoff/taxi surfa › Snow/slush/ice covered › Effect on operation

Pilot

  • Certificate: commercial pilot
  • Ratings: single-engine land; instructor: airplane single-engine; instrument: airplane
  • Flight time: 4,736 hours in all; 1,525 in this make and model; 24 in the last 90 days; 24 in the last 30 days; 4,680 as pilot in command
  • Last flight review: November 5, 2011
  • Medical certificate: Class 2 (without waivers/limitations)
  • Seat: ctr
  • Injury: no injuries

The aircraft

  • Airframe total time: 13,075 hours
  • Last inspection: annual inspection, May 11, 2011
  • Maximum gross weight: 9,125 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: Honeywell TPE 331-10 (turboprop); 0 hours total
  • Operator: Valley Air LLC

The flight

  • Departed from: ID41 Yellow Pine ID at 7:00 pm
  • Destination: ID41 Yellow Pine ID
  • Flight plan: none
  • Runway 24, 2,450 ft by 175 ft

Weather at the time

  • Light: daylight
  • Visibility: 10 statute miles
  • Sky: broken clouds at 4,200 ft; clear
  • Temperature: 30°F (-1°C), dew point 12°F (-11°C)
  • Altimeter: 29.79 inHg
  • Observation at 7:51 pm from MYL, 32 miles away

Injuries

FatalSeriousMinorNone
Flight crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.