# NTSB CHI90LA114: Rockwell AC-690, N57175, Sheboygan, WI, April 18, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 17, 1990, 19:45 local (Apr 18, 1990, 00:45 UTC)
- Place: Sheboygan, WI
- Coordinates: 43.819473, -87.749313 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.8195&lon=-87.7493&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report September 28, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 14657
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI90LA114
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14657/pdf
- Page: https://openairdocs.org/ntsb/CHI90LA114

## Probable cause

FAILURE OF THE PILOT TO COMPLETE THE LANDING CHECKLIST AND LOWER THE LANDING GEAR. CONTRIBUTING TO THIS ACCIDENT IS HABIT PATTERN INTERFERENCE AND DISTRACTION.

## Sequence of events

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

- Gear not extended, approach - vfr pattern - final approach
  - checklist - not followed, pilot in command (cause)
  - diverted attention, pilot in command (contributing factor)
  - habit interference, pilot in command (contributing factor)
- In flight collision with terrain/water, landing - flare/touchdown

## Analysis

THE PILOT HAD EXECUTED A GO AROUND ON HIS FIRST APPROACH DUE TO DEER ON THE RUNWAY. ON THE NEXT APPROACH, ANOTHER AIRCRAFT CALLED ON THE BASE LEG TO AN INTERSECTING RUNWAY WHEN THE PILOT WAS TURNING TO THE BASE LEG. PILOT WAS DISTRACTED LOOKING FOR OTHER AIRCRAFT AND CONTINUED APPROACH WITH INTENTION OF HOLDING SHORT OF INTERSECTING RUNWAY. PILOT FAILED TO LOWER GEAR AND MADE GEAR UP LANDING.

## Aircraft

- Registration: [N57175](https://openairdocs.org/deregistered/N57175-2014-04-08), registration cancelled 2014-04-08, S/N 11004, built 1972 (OpenAirDocs)
- Reported make and model: ROCKWELL AC-690
- Registry model: [Aero Commander 690](https://openairdocs.org/model/aero-commander-690) (registry code 0141720) (OpenAirDocs)
- Registry engine: [AiResearch TPE331 series](https://openairdocs.org/engine/airesearch-tpe331-series) (registry code 01514, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 11004
- Airframe hours: 6953
- Engines: GARRETT TPE3315-251K 717 horsepower turbo prop
- Damage: Substantial damage
- Flight: Other work use, Part 91
- Registered owner: Aero Metric Engineering
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 3, 1990, 46 hours before
- Departed: GRB, GREEN BAY, WI
- Destination: SBM, SHEBOYGAN, WI
- Airport: SBM, Sheboygan, runway 21, 5,400 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; commercial, flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 3,945 total, 434 in this make and model, 3,667 as pilot in command, 153 in the last 90 days, 106 in the last 30 days, 7 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 200° at 9 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 48 °F, dew point 23 °F
- Altimeter: 30.00 inHg
- Observed at: GRB, 40 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 19900417010229A](https://openairdocs.org/incident/19900417010229A), Apr 17, 1990: Gulstm 690, Sheboygan, WI, Substantial damage. Distracted by other traffic and go around because of deer on runway. Landed gear up.

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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