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Accidents · NTSB WPR21LA139 · Final report

Beech B19 accident near Twin Falls, Idaho, March 18, 2021

On March 18, 2021 at about 6:30 am local time, a 1973 Beech B19, registered N1956W, was substantially damaged in an accident during initial climb near Twin Falls, Idaho (Joslin Fld - Magic Valley Rgnl airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 3 people were on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The pilot’s failure to maintain airplane control during initial climb with a crosswind when the airspeed decreased, the airplane exceeded its critical angle of attack and aerodynamical stalled at too low an altitude for the pilot to recover before the airplane descended and landed hard.

Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.

What the record shows

Date
March 18, 2021 · about 6:30 am local time · cases in 2021
Place
Twin Falls, Idaho · Joslin Fld - Magic Valley Rgnl · cases near this airport · map
Type
Accident
Injuries
No one was hurt; 3 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Beech B19 NO SERIES, built 1973 · all B19s on the register
Registration
N1956W · registry record · serial MB-620
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

The pilot reported that during the initial climb from runway 08 with a crosswind, the airplane attained an altitude of about 50 ft above ground level when it encountered low level wind shear. The airspeed decreased, and the airplane stalled. The pilot attempted to recover airspeed by lowering the nose, but there was not enough altitude or time. The airplane subsequently landed hard substantially damaging the right wing and aft fuselage. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. About the time of the accident the reported wind was from 180o at 18 knots.

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. Aerodynamic stall/spin during initial climb
  2. Windshear or thunderstorm during initial climb defining event

The NTSB's findings

  • Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Angle of attack › Not attained/maintained
  • Personnel issues › Task performance › Use of equip/info › Aircraft control › Pilot
  • Aircraft › Aircraft oper/perf/capability › Performance/control parameters › Airspeed › Not attained/maintained
  • Environmental issues › Conditions/weather/phenomena › Wind › Crosswind › Effect on operation

Pilot

  • Certificate: private
  • Ratings: single-engine land
  • Flight time: 79.7 hours in all; 79.7 in this make and model
  • Medical certificate: Class 2 (without waivers/limitations)
  • Seat: left
  • Injury: no injuries

Passenger

  • Seat: rgt
  • Injury: no injuries

Passenger

  • Seat: rear
  • Injury: no injuries

The aircraft

  • Airframe total time: 2,366 hours
  • Last inspection: annual inspection, May 16, 2020; 77.2 hours since
  • Maximum gross weight: 2,154 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming O-320-E3D (piston); 2,366 hours total

The flight

  • Destination: BMC Brigham City UT
  • Flight plan: none
  • Runway 08, 8,703 ft by 150 ft

Weather at the time

  • Light: night, dark
  • Wind: from 180° at 18 knots
  • Visibility: 10 statute miles
  • Sky: a few clouds at 12,000 ft
  • Temperature: 54°F (12°C), dew point 25°F (-4°C)
  • Altimeter: 29.96 inHg
  • Observation at 11:53 pm from KTWF

Weather report (METAR): METAR KTWF 190553Z AUTO 18018KT 10SM FEW120 12/M04 A2996 RMK AO2 PK WND 18026/0544 SLP115 T01171039 10189 20100 58006=

Injuries

FatalSeriousMinorNone
Flight crew1
Passengers2

Photographs from the investigation 2 pictures from the NTSB's docket, as the NTSB released them

The NTSB's photographs with the NTSB's captions, at screen size. Open a picture to see it full size or to report one that should not be shown.

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

4 documents, released by the NTSB on September 21, 2021. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.

The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.

Connections how this case links to the rest of the register

Aircraft
Place

The whole map of how records connect · these connections as data: /graph/accident/WPR21LA139.json.

The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.

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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.