# NTSB CHI92LA158: Aeronca O-58B, N47373, Oshkosh, WI, May 23, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 23, 1992, 14:30 local (19:30 UTC)
- Place: Oshkosh, WI
- Coordinates: 44.060543, -88.540069 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.0605&lon=-88.5401&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15453
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92LA158
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15453/pdf
- Page: https://openairdocs.org/ntsb/CHI92LA158

## Probable cause

THE INADEQUATE INSPECTION BY OTHER MAINTENANCE PERSONNEL, AND AN INADEQUATE PREFLIGHT INSPECTION BY THE PILOT IN COMMAND.  A FACTOR CONTRIBUTING TO THE ACCIDENT WAS THE REVERSAL OF THE AILERON CABLES.

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - flt control syst,aileron control cable/rod - incorrect (contributing factor)
  - maintenance,inspection - inadequate, other maintenance personnel (cause)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - directional control - not possible, pilot in command
- Nose over, takeoff - roll/run
  - ground loop/swerve - encountered, pilot in command

## Analysis

THE AIRPLANE WAS ON THE FIRST TAKEOFF AFTER AN ANNUAL INSPECTION AND REBUILD.  THE AIRPLANE EXPERIENCED A LOSS OF DIRECTIONAL CONTROL, EXITED THE RUNWAY TO THE LEFT, AND NOSED OVER.  AN EXAMINATION OF THE AIRPLANE AFTER THE ACCIDENT FOUND THE AILERON CABLES TO BE REVERSED.

## Aircraft

- Registration: [N47373](https://openairdocs.org/aircraft/N47373), registered now, S/N 10233, built 1943 (OpenAirDocs)
- Reported make and model: AERONCA O-58B
- Registry model: [Aeronca 0-58B](https://openairdocs.org/model/aeronca-0-58b) (registry code 0191006) (OpenAirDocs)
- Registry engine: [Continental A&C65 series](https://openairdocs.org/engine/continental-a-c65-series) (registry code 17003, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 10233
- Engines: CONTINENTAL A65-8 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: John T. Monnett Jr.
- Registered owner: John T. Monnett Jr.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 23, 1992, 1 hours before
- Departed: OSH
- Destination: OSH
- Airport: OSH, Wittman Field, runway 36, 8,001 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 48; private; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 1,200 total, 75 in this make and model, 1,150 as pilot in command, 1 in the last 90 days, 1 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 10° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: 3,700 ft broken
- Temperature: 55 °F, dew point 39 °F
- Altimeter: 30.00 inHg
- Observed at: OSH, 1 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 19920523016059A](https://openairdocs.org/incident/19920523016059A), May 23, 1992: Aronca O58B, Oshkosh, WI, Substantial damage. Veered off runway and overturned on takeoff roll. Test flight after rebuild. Ailerons cables were reversed.

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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