# NTSB MKC89LA155: Weatherly 201-B, N1286W, Wymore, NE, July 8, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 7, 1989, 19:30 local (Jul 8, 1989, 00:30 UTC)
- Place: Wymore, NE
- Coordinates: 40.119129, -96.660491 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.1191&lon=-96.6605&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 2, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 34828
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC89LA155
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34828/pdf
- Page: https://openairdocs.org/ntsb/MKC89LA155

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN AIRSPEED AND ALTITUDE DURING CLIMBOUT. CONTRIBUTING TO THE ACCIDENT WAS THE HIGH DENSITY ALTITUDE.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - weather condition - high density altitude (contributing factor)
  - airspeed - not maintained, pilot in command (cause)
  - altitude - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
- On ground/water collision with object, descent - uncontrolled
  - object - tree(s) (contributing factor)

## Analysis

THE PILOT SAID THAT SHORTLY AFTER TAKEOFF FOR AN AERIAL APPLICATION OPERATION, THE ACFT SHUDDERED AND SETTLED BACK TO THE GROUND. AFTER ATTAINING ABOUT 10 OR 15 FEET OF ALTITUDE; THE ACFT BOUNCED OFF A FARM FIELD AND CAREENED INTO SOME TREES CAUSING SUBSTANTIAL DAMAGE. THE SURFACE TEMPERATURE WAS 100 DEGREES F. AND THE WIND WAS CALM. THE PLT SAID HE THOUGHT THE WEATHER CONDITONS CONTRIBUTED TO THE ACCIDENT.

## Aircraft

- Registration: [N1286W](https://openairdocs.org/deregistered/N1286W-1990-06-18), registration cancelled 1990-06-18, S/N 640 (OpenAirDocs)
- Reported make and model: WEATHERLY 201-B
- Registry model: [Weatherly 201B](https://openairdocs.org/model/weatherly-201b) (registry code 9630408) (OpenAirDocs)
- Category: Airplane
- Serial number: 640
- Airframe hours: 3471
- Engines: P&W R-985-AN1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Thomsen Aerial Spray
- Registered owner: Thomsen, Harold L
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 13, 1989, 159 hours before
- Departed: NE92, WYMORE, NE
- Airport: NE92

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 2,565 total, 1,120 in this make and model, 2,367 as pilot in command, 159 in the last 90 days, 126 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 100 °F, dew point -0 °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 19890708021519A](https://openairdocs.org/incident/19890708021519A), Jul 8, 1989: Wthrly 201B, Wymore, NE, Substantial damage. After liftoff settled into a farm field. Careened into trees. Blamed turbulence but had 100 degrees and calm wind.

## Other investigations on N1286W (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 OAK78DVG62](https://openairdocs.org/ntsb/OAK78DVG62), Jul 18, 1978: Weatherly 201B (N1286W), Davis, CA, substantial damage

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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