# NTSB CHI82DA105: Aero Commander 100, N5518M, Mineral Point, WI, March 29, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: March 29, 1982, 15:30 local (21:30 UTC)
- Place: Mineral Point, WI
- Coordinates: 42.590805, -89.640518 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.5908&lon=-89.6405&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report March 29, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71720
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82DA105
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71720/pdf
- Page: https://openairdocs.org/ntsb/CHI82DA105

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - weather condition - high wind (contributing factor)
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - level off - improper, pilot in command (cause)
- Main gear collapsed, landing - flare/touchdown
  - landing gear,main gear attachment - overload (cause)
- Loss of control - on ground/water, landing - roll
- Nose over, landing - roll
  - terrain condition - rough/uneven (contributing factor)
  - terrain condition - downhill (contributing factor)

## Analysis

THE RIGHT MAIN GEAR COLLAPSED DURING A LANDING ON RUNWAY 22 WITH THE WIND FROM 140 DEGREES AT 15 GUSTING 22 KNOTS. SUBSEQUENTLY, THE AIRCRAFT VEERED TO THE RIGHT AND WENT OFF OF THE RUNWAY. IT CONTINUED INTO A GULLY AND NOSED OVER. AN EXAMINATION REVEALED THAT A BOLT HAD FAILED WHERE THE RIGHT MAIN STRUT WAS ATTACHED TO THE FRAME. NO EVIDENCE OF FATIGUE WAS FOUND.

## Aircraft

- Registration: [N5518M](https://openairdocs.org/deregistered/N5518M-1982-12-09), registration cancelled 1982-12-09, S/N 035 (OpenAirDocs)
- Reported make and model: AERO COMMANDER 100
- Registry model: [Aero Commander 100](https://openairdocs.org/model/aero-commander-100) (registry code 0140202) (OpenAirDocs)
- Category: Airplane
- Serial number: 035
- Airframe hours: 1405
- Engines: LYCOMING O-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: William Winch
- Registered owner: William Winch
- Departed: WISCONSIN RAPID, WI
- Destination: SAVANNA, IL
- Airport: C32, Iowa County, runway 22, 3,010 × 40 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 138 total, 50 in this make and model, 81 as pilot in command, 5 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 15 knots
- Visibility: 12 statute miles
- Temperature: 108 °F
- Altimeter: 29.00 inHg

## 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 19820329006539A](https://openairdocs.org/incident/19820329006539A), Mar 29, 1982: Slinds 100ACMDR, Mineral Point, WI, Substantial damage. Pilot made hard landing collapsing gear. Aircraft ran off runway and flipped inverted in ditch.

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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