# NTSB CHI85FA259: Taylorcraft BC12-D1, N44340, Mundelein, IL, June 28, 1985

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: June 28, 1985, 10:30 local (15:30 UTC)
- Place: Mundelein, IL
- Coordinates: 42.26078, -88.000259 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.2608&lon=-88.0003&mi=10
- Phase of flight: [Unknown](https://openairdocs.org/ntsb-phases/990) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12850
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85FA259
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12850/pdf
- Page: https://openairdocs.org/ntsb/CHI85FA259

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, unknown
  - control interference - inadvertent, passenger (cause)
  - physical impairment(cardiovascular), other person (cause)
- In flight collision with terrain/water, descent - uncontrolled
  - terrain condition - ground

## Analysis

THE ACFT CONTACTED TERRAIN IN A NEAR VERTICAL ATTITUDE APRX 1/4 MILE EAST OF THE PLT'S PRIVATE AIRSTRIP. THERE WERE NO WITNESSES TO THE ACCIDENT, HOWEVER, THE ACFT WAS OBSERVED FLYING AT LOW ALTITUDES PRIOR TO THE ACCIDENT. AN AUTOPSY REPORT ON THE PASSENGER DISCLOSED SEVERE CORONARY ARTERY DISEASE AND A RECENT HEMORRHAGE INTO A PLAQUE AT THE ORIGIN OF THE LEFT CIRCUMFLEX ARTERY.

## Aircraft

- Registration: N44340 (not matched to a registry record)
- Reported make and model: TAYLORCRAFT BC12-D1
- Category: Airplane
- Serial number: 10140
- Engines: CONTINENTAL A65-8F 65 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial observation, Part 91
- Registered owner: Amilio N. Polidori
- Airworthiness certificate: Standard, Normal

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 72; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 3,850 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 10 knots
- Visibility: 10 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 70 °F, dew point 52 °F
- Altimeter: 30.00 inHg
- Observed at: ORD, 25 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19850628028479A](https://openairdocs.org/incident/19850628028479A), Jun 28, 1985: Tcraft STCBC, Mundelein, IL, Destroyed. Impacted ground in near vertical attitude. Passenger may have collapsed and interfered or distracted pilot.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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