CHI93LA058 · Beech 90
Planemaster Services Beech 90 · Accident: loss of control in flight on approach
From Dupage Airport (DPA) to an unrecorded destination
Event
- NTSB case
- CHI93LA058
- 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
- 0 · 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 90
- Aircraft type
- Beechcraft 90
- 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
- N56KA
- Operator
- Planemaster Services
- Onboard fatalities
- Unknown
- Route
- From Dupage Airport (DPA), West Chicago, ILTo 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
- Approach · VFR go-around
- 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
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command(cfi) › Directional control, not maintained
- Pilot in command(cfi) › Remedial action, not performed
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
THE TRAINEE STATED SHE WAS FLYING FINAL APPROACH AT 95 KIAS WITH THE POWER SET AT APPROXIMATELY 400 POUNDS OF TORQUE. THE INSTRUCTOR PILOT COMMANDED THE TRAINEE TO GO AROUND. THE TRAINEE STATED SHE APPLIED FULL POWER. SHORTLY AFTER THE FULL POWER APPLICATION THE INSTRUCTOR PILOT STATED HE OBSERVED A LEFT YAW. THE INSTRUCTOR PILOT TOOK CONTROL OF THE AIRPLANE AND FEATHERED THE LEFT PROP. THE AIRPLANE CONTINUED ITS LEFT YAW/TURN UNTIL GROUND COLLISION. APPROXIMATELY 120 DEGREES TO THE LEFT OF THE RUNWAY HEADING. TEAR DOWN OF THE LEFT ENGINE AND ITS CONTROLS REVEALED NOTHING WHICH WOULD HAVE CAUSED A POWERPLANT FAILURE. THE AIRCRAFT OPERATING MANUAL STATES THE FINAL APPROACH SPEED OF THE AIRPLANE SHOULD BE 96 KIAS. V-MC IN THE AIRPLANE IS 86 KIAS.
Probable cause
THE INSTRUCTOR PILOT NOT MAINTAINING DIRECTIONAL CONTROL FOLLOWING ENGINE SHUT DOWN AND NOT PERFORMING REMEDIAL ACTION OF A POWER REDUCTION TO REGAIN DIRECTIONAL CONTROL, AS PRESCRIBED BY HIS COMPANY'S TRAINING MANUAL, ONCE THE AIRPLANE BEGAN TO YAW/TURN TO THE LEFT.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI93LA058
- Event ID
- 20001211X16144
- Case number
- CHI93LA058
- 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: 719c45beaac07eeafd4b3e8b35b399458a863abb9bd72e70101540287d77ae6c; retrieved 2026-09-23T02:24:40.632Z.