# NTSB MKC83LA188: Weatherly 201B, N1259W, Agency, IA, August 12, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: August 12, 1983, 10:45 local (15:45 UTC)
- Place: Agency, IA
- Coordinates: 40.990943, -92.300682 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.9909&lon=-92.3007&mi=10
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33468
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC83LA188
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33468/pdf
- Page: https://openairdocs.org/ntsb/MKC83LA188

## Sequence of events

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

- In flight collision with terrain/water
  - terrain condition - high obstruction(s) (contributing factor)
  - weather condition - turbulence (contributing factor)
  - weather condition - unfavorable wind (contributing factor)
  - airspeed - inadequate, pilot in command (cause)
  - stall/mush - inadvertent, pilot in command (cause)
  - terrain condition - crop (contributing factor)

## Analysis

THE PLT WAS ENGAGED IN AERIAL APPLICATION OVER A SMALL 9 ACRE BEAN FIELD THAT WAS SURROUNDED ON 3 SIDES BY HEDGE ROWS. HE REPORTED THAT AS HE DESCENDED ON THE LEEWARD SIDE OF A HEDGE ROW TO BEGIN A SWATH RUN, THE ACFT ENCOUNTERED TURBULENCE & MUSHED INTO THE GROUND. SUBSEQUENTYLY, THE LEFT WING CONTACTED THE BEANS & THE ACFT CARTWHEELED.

## Aircraft

- Registration: [N1259W](https://openairdocs.org/deregistered/N1259W-1990-04-02), registration cancelled 1990-04-02, S/N 613 (OpenAirDocs)
- Reported make and model: WEATHERLY 201B
- Registry model: [Weatherly 201B](https://openairdocs.org/model/weatherly-201b) (registry code 9630408) (OpenAirDocs)
- Category: Airplane
- Serial number: 613
- Airframe hours: 2842
- Engines: P&W R-985-AN1 450 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Rex A. Yoakam
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 26, 1983, 49 hours before
- Departed: FARSON, IA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 3,445 total, 183 in this make and model, 3,289 as pilot in command, 219 in the last 90 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 8 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 39 °F

## 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 19830812045319A](https://openairdocs.org/incident/19830812045319A), Aug 12, 1983: Wthrly 201B, Agency, IA, Destroyed. Aircraft mushed into ground during start of swath run as pilot attempted to level off.

## Other investigations on N1259W (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 FTW77FPG77](https://openairdocs.org/ntsb/FTW77FPG77), Aug 15, 1977: Weatherly 201B (N1259W), Cornerstone, AR, substantial damage, 1 fatal

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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