CHI92FA067 · Beech A-36TC
Grandmother Beech A-36TC · Accident: loss of control in flight on approach
From Chicago Midway International Airport (MDW) to General Wayne A. Downing Peoria International Airport (PIA)
Event
- NTSB case
- CHI92FA067
- 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
- 1 · 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
- Instrument Meteorological Cond
Beech A-36TC
- Aircraft type
- Beechcraft A-36
- 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
- N345CC
- Operator
- Grandmother
- Onboard fatalities
- Unknown
- Route
- From Chicago Midway International Airport (MDW), Chicago, ILTo General Wayne A. Downing Peoria International Airport (PIA), Peoria, IL
- 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 · IFR initial approach
- 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
- Destroyed
Cause areas
- Pilot in command › Anti-ice/deice system, not used
- Pilot in command › Flight into known adverse weather, continued
- Wing › Ice
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
DURING THE WX BRIEFING AT CHICAGO, THE PILOT WAS PROVIDED PILOT REPORTS OF AIRCRAFT ENCOUNTERING ICING IN THE VICINITY OF CHICAGO, WEST CHICAGO, AND SPRINGFIELD. HE WAS ALSO GIVEN THE DESTINATION SURFACE TEMP/DEWPOINT OF 33/31. WHILE BEGINNING THE APPROACH TO THE DESTINATION AIRPORT, AT AN INITIAL APPROACH ALTITUDE OF 2,400 FT, THE FRONT LEFT SEAT PILOT STATED SHE OBSERVED ICE ON THE WINDSHIELD AND WINGS. IN ADDITION, THE REAR LEFT SEAT PAX STATED THAT SHE REMEMBERS THE REAR RIGHT SEAT PAX/PILOT LOOKING AT THE WINGS WITH A FLASHLIGHT, AND RECALLED OBSERVING 'ICE CURVED OVER THE TOP OF THE WING...'. THE AIRPLANE IMPACTED THE GROUND IN AN UNCONTROLLED DESCENT. THE AIRPLANE WAS APRX 245 LBS OVER MAX GROSS WEIGHT WHEN THE ACCIDENT OCCURRED.
Probable cause
THE PILOT-IN-COMMAND'S CONTINUED FLIGHT INTO ICING CONDITIONS AND HIS FAILURE TO USE THE AIRPLANE'S ANTI-ICE/DE-ICE SYSTEM RESULTING IN A BUILD-UP OF ICE OVER THE AIRPLANE'S SURFACE AREA AND RESULTANT LOSS OF CONTROL. FACTORS WHICH CONTRIBUTED TO THE ACCIDENT WERE: THE AIRPLANE WAS OVER IT'S CERTIFICATED MAXIMUM GROSS WEIGHT, AND THE ICING CONDITIONS.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI92FA067
- Event ID
- 20001211X13956
- Case number
- CHI92FA067
- 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: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1992-01-05.
- API snapshot SHA-256: 83cbe8ad8abe4248b89c4522975d586a950acd824a928042710f06ff2baa103b; retrieved 2026-09-21T01:25:11.921Z.