# NTSB CHI88DEE02: Hill Bushby Mustang II, N84HM, Yorkville, IL, February 18, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: February 18, 1988, 15:06 local (21:06 UTC)
- Place: Yorkville, IL
- Coordinates: 41.640605, -88.439216 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.6406&lon=-88.4392&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report January 16, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 13852
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI88DEE02
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13852/pdf
- Page: https://openairdocs.org/ntsb/CHI88DEE02

## Probable cause

PERFORMANCE OF AEROBATIC MANEUVERS WITH INSUFFICIENT ALTITUDE FOR RECOVERY.

## Sequence of events

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

- In flight collision with terrain/water, maneuvering
  - aerobatics - initiated, pilot in command
  - altitude - misjudged, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (contributing factor)

## Analysis

ACCORDING TO WITNESSES, THE AIRCRAFT APPEARED TO BE COMING OUT OF A LOOP WHEN IT CRASHED IN AN OPEN FIELD. DURING IMPACT, THE AIRCRAFT WAS EXTENSIVELY DAMAGED. NO PREIMPACT PART FAILURE OR MALFUNCTION WAS FOUND.

## Aircraft

- Registration: [N84HM](https://openairdocs.org/deregistered/N84HM-1994-08-03), registration cancelled 1994-08-03, S/N MII1145 (OpenAirDocs)
- Reported make and model: HILL BUSHBY MUSTANG II (BUSHBY MUS)
- Registry model: [Hill Clayton C BUSHBY MUSTANG II](https://openairdocs.org/model/hill-clayton-c-bushby-mustang-ii) (registry code 1690667) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: MII-1145
- Airframe hours: 163
- Engines: LYCOMING O-320-E2D 160 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Clayton Hill
- Registered owner: Kame Air Inc
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, September 2, 1987, 23 hours before
- Departed: 1C5, PLAINFIELD, IL
- Destination: C48, SANDWICH, IL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 1,972 total, 6 in this make and model, 1,830 as pilot in command, 6 in the last 90 days, 6 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 10 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 30 °F, dew point 27 °F
- Altimeter: 30.00 inHg
- Observed at: ARR, 8 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 19880218002719A](https://openairdocs.org/incident/19880218002719A), Feb 18, 1988: Amtrbb MUSTANG2, Yorkville, IL, Destroyed, 1 fatal. Was observed to be coming out of a low altitude loop prior to ground impact.

## Other investigations on N84HM (1)

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.

- [NTSB MIA87LA172](https://openairdocs.org/ntsb/MIA87LA172), Jun 6, 1987: Bushby Mustang II (N84HM), Cocoa, FL, substantial damage

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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