CHI01FA017 · Beech 95-C55
Beech 95-C55 · Accident: loss of control in flight while maneuvering
From Sioux Gateway Airport / Brigadier General Bud Day Field (SUX) to an unrecorded destination
Event
- NTSB case
- CHI01FA017
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 2 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Beech 95-C55
- Aircraft type
- Beechcraft 55
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N782B
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Sioux Gateway Airport / Brigadier General Bud Day Field (SUX), Sioux City, IATo not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Maneuvering
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control in flight
- Also codedOther events the NTSB coded in the sequence, such as a wire strike after a loss of power. Flight Findings uses them for its kinds of event. Glossary
- Stall
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
- Flightcrew › Remedial action, inadequate
- Pilot in command(cfi) › Supervision, inadequate
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The airplane was destroyed following an uncontrolled descent, and impact with terrain. A witness said that he heard sounds like stall and recovery sounds where power was reduced and power was added. He stated that he observed the airplane fly in stair step like maneuver. He said that during the last step, he observed the airplane in a flat attitude. He estimated that he observed the airplane there to be about 150 to 200 yards above the ground. He stated he saw the airplane in a counter clockwise spin with a nose down attitude. He said that he did not hear any sounds during the airplane's spiral. The instructor pilot had given 5.2 hours of dual instruction since he obtained his multi-engine flight instructor certificate. An on-scene investigation revealed the landing gear selector was down and the landing gear actuator was extended. The flap actuator was found extended to 15 degrees. Control continuity was established to all flight control surfaces. Control continuity was established to both engines. A thumb compression was found at all cylinders of both engines. All magnetos produced spark. Removed spark plugs were gray in color with a carbon colored coating. Both propellers exhibited an aft bend on one of their blades. The propellers exhibited chordwise abrasion. All four fuel tanks were found compromised. No preimpact anomalies were found.
Probable cause
The inadequate remedial action the flightcrew had during the stall recovery maneuver and the flight instructor's inadequate supervision. A factor was the intentional stall the flightcrew was performing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI01FA017
- Event ID
- 20001212X22112
- Case number
- CHI01FA017
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: investigation status. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: 909fc91358c3e98b373ea5c72706d09a67293b523d3d85bb3d3c8798ac4a43eb; retrieved 2026-09-20T20:48:57.924Z.