# NTSB MKC84LA236: Piper PA-25-235, N8640L, Arapahoe, NE, July 28, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 28, 1984, 08:25 local (13:25 UTC)
- Place: Arapahoe, NE
- Coordinates: 40.299404, -99.890815 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.2994&lon=-99.8908&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33760
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA236
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33760/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA236

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - object - wire,transmission (contributing factor)
  - clearance - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

WHILE ON A SWATH RUN TO APPLY INSECTICIDE, THE ACFT COLLIDED WITH ELECTRICAL TRANSMISSION LINES THAT WERE CROSSING THE FIELD. AFTER THE INITIAL IMPACT, THE ACFT ANGLED TO THE LEFT & HIT ANOTHER TRANSMISSION LINE, THEN IMPACTED THE GROUND.

## Aircraft

- Registration: [N8640L](https://openairdocs.org/deregistered/N8640L-2004-09-15), registration cancelled 2004-09-15, S/N 25-4933, built 1969 (OpenAirDocs)
- Reported make and model: PIPER PA-25-235
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 254933
- Airframe hours: 2288
- Engines: LYCOMING O-540-B2B5 235 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Arapahoe Aerial Sprayers
- Registered owner: Tk Ag-Air Service
- Airworthiness certificate: Special, Restricted (Special)
- Departed: 37V, ARAPAHOE, NE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 4,969 total, 1,800 in this make and model, 4,758 as pilot in command, 120 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 12 knots
- Visibility: 15 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 73 °F
- Altimeter: 30.00 inHg
- Observed at: MCK, 32 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 19840728035939A](https://openairdocs.org/incident/19840728035939A), Jul 28, 1984: Piper PA25235, Arapahoe, NE, Substantial damage. Struck transmission lines and impacted ground during crop dusting run.

## Other investigations on N8640L (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 MKC76DCJ09](https://openairdocs.org/ntsb/MKC76DCJ09), Jul 24, 1975: Piper PA-25 (N8640L), Minden, NE, 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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