# NTSB MIA90LA185: Cessna A188B, N86405, Vicksburg, MS, September 21, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 21, 1990, 15:30 local (20:30 UTC)
- Place: Vicksburg, MS
- Coordinates: 32.320613, -90.870086 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.3206&lon=-90.8701&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 2, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32702
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA185
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32702/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA185

## Probable cause

FAILURE OF THE PILOT TO AVOID A MUD HOLE ON THE RUNWAY DURING THE GROUND ROLL TO TAKEOFF.

## Sequence of events

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

- On ground/water encounter with terrain/water, takeoff - roll/run
  - distance - misjudged, pilot in command (cause)
  - terrain condition - soft
- Main gear collapsed, takeoff - roll/run

## Analysis

THE PLT STATED THAT DURING THE GROUND ROLL TO TAKEOFF, AFTER RAISING THE TAIL, THE RT SIDE OF THE ACFT BEGAN TO SINK. THE MAIN GEAR THEN BROKE OUT FROM UNDER THE ACFT CAUSING IT TO VEER OFF THE LT SIDE OF THE RWY. ACCORDING TO AN FAA INSPECTOR WHO EXAMINED THE AIRSTRIP, A MUD HOLE WAS LOCATED ON THE RWY AT THE LOCATION WHERE THE TAIL WHEEL WOULD BE LIFTED OFF. HE FURTHER STATED THAT THE PLT GOT TOO CLOSE TO THE SOFT SPOT & THE RT MAIN LANDING GEAR ATTACH BOLT BROKE AFTER THE GEAR TRAVELLED INTO THE MUD HOLE. METALLURGICAL EXAMINATION OF THE FAILED LANDING GEAR ATTACH BOLT REVEALED THAT IT FAILED DUE TO OVERLOAD.

## Aircraft

- Registration: [N86405](https://openairdocs.org/deregistered/N86405-2003-09-24), registration cancelled 2003-09-24, S/N 18802012T, built 1975 (OpenAirDocs)
- Reported make and model: CESSNA A188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18802012T
- Engines: CONTINENTAL IO-520D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Crosby Simmons
- Airport: NONE, Simmons Flying Service, runway 18, 2,600 × 50 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 12,000 total, 2,500 in this make and model, 2,000 as pilot in command, 250 in the last 90 days, 100 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 10 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: JAN, 51 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 19900921041739A](https://openairdocs.org/incident/19900921041739A), Sep 21, 1990: Cessna A188B, Vicksburg, MS, Substantial damage. Right main gear broke off on takeoff roll when it hit a mud hole in rough dirt Private strip.

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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