- Date
- March 18, 2021, 00:30 local (06:30 UTC)
- Place
- Twin Falls, ID · Airport Environment
- Injuries
- 3 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N1956WBeech B19
- Defining event
- Initial climb: Windshear or thunderstorm
- Weather
- Visual (VMC) · Night/dark
- Status
- Completed
- Report
- Approved by Office Director
- Investigation class
- Class 4 - Basic report with no Prelim publish
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Administration
- Case key
- 102789
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
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.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
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.
Aircraft
- Registration
- N1956W
- Reported as
- Beech B19 (NO SERIES)
- Category
- Airplane
- Serial number
- MB-620
- Built
- 1973
- Airframe hours
- 2,366
- Engine
- Lycoming O-320-E3D, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 16, 2020 · 77.2 hours before
- Destination
- BMC · Brigham City, UT
- Airport
- TWF · Joslin Fld - Magic Valley Rgnl, runway 08, 8,703 × 150 ft, asphalt
- Equipment
- Electronic flight bag or handheld device
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 20
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 2, Without waivers/limitations
- Seat
- Left
- Flight hours
- 79.7 total · 79.7 in this make and model
Weather
- Conditions
- Visual (VMC) · Night/dark
- Wind
- 180° at 18 knots
- Visibility
- 10 statute miles
- Temperature
- 54 °F, dew point 25 °F
- Altimeter
- 29.96 inHg
- Observed at
- KTWF
- METAR
- METAR KTWF 190553Z AUTO 18018KT 10SM FEW120 12/M04 A2996 RMK AO2 PK WND 18026/0544 SLP115 T01171039 10189 20100 58006=
Docket · 4
The files NTSB released with the investigation on September 21, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 9.4 MB in all.