N789TB accident

NTSB CEN23LA138 · 2023-03-12 · Eden Prairie, MN · near FCM

Docket — crew, injuries and powerplant

Factual narrative

The pilot reported that, during a night cross country flight, the airplane encountered icing conditions while on an instrument approach. The pilot observed about 4 inches of ice had formed on the wing, running about one foot aft. The pilot reported he put the landing gear down about 5 miles from the runway. The pilot continued the approach and stated he broke out of the clouds about 300-400 ft agl and had “minimal control.” The airplane impacted snow-covered ground and came to rest about a half mile from the runway. The airplane was destroyed by a post-impact fire. In an email, the pilot stated the “airplane was in good shape.” At the time of the accident there was an icing AIRMET that covered the location of the accident. The Socata TB21 Pilot Information Manual states “Flight into known icing conditions is prohibited.”

Probable cause

The pilot’s continued flight into icing conditions in an airplane that was not equipped for icing, which led to structural icing, subsequent loss of airplane control and impact with terrain. The National Transportation Safety Board determined the probable cause of this accident.

Circumstances

Event type
Accident
Highest injury
Serious
Weather conditions
Instrument Meteorological Cond
Light condition
Night
Sky condition
OVC
Ceiling (ft)
500
Visibility (sm)
3
Wind direction
150
Wind speed (kt)
8
Temperature (F)
28
Nearest airport
FLYING CLOUD
Distance from field
2.0
Airport elevation
906

Aircraft

RegistrationMakeModelDamageFAR part
N789TB — — DEST 091

Sequence of events

#OccurrencePhase
2 Approach Structural icing Cruise
3 Landing Loss of control in flight defining Cruise
4 Post-impact Fire/smoke (post-impact) Approach
5 Landing Collision with terr/obj (non-CFIT) Cruise

Findings

Finding
Personnel issues-Task performance-Planning/preparation-Weather planning-Pilot factor
Personnel issues-Psychological-Attention/monitoring-Monitoring environment-Pilot cause
Aircraft-Aircraft oper/perf/capability-Aircraft capability-(general)-Capability exceeded cause
Environmental issues-Conditions/weather/phenomena-Ceiling/visibility/precip-Drizzle/mist-Effect on equipment factor
Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot factor