# NTSB DEN87LA101: Boeing A75N1, N63915, Argusville, ND, April 16, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 16, 1987, 16:00 local (21:00 UTC)
- Place: Argusville, ND
- Coordinates: 47.050029, -96.940574 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.0500&lon=-96.9406&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report May 2, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 17205
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN87LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17205/pdf
- Page: https://openairdocs.org/ntsb/DEN87LA101

## Sequence of events

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

- Loss of control - in flight, maneuvering - aerial application
  - weather condition - crosswind (contributing factor)
  - stall - inadvertent, pilot in command (cause)
  - weather condition - gusts
  - remedial action - initiated, pilot in command (contributing factor)
  - altitude - inadequate, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PLT TOOK OFF WITH A LOAD OF 46-0-0 FERTILIZER AND PROCEEDED TO THE FIELD TO BE TREATED. THE PLT SAID WHEN HE ARRIVED HIS FLAGGER WAS NOT IN POSITION SO HE INITIATED A GOAROUND. WHEN THE PLT HAD TURNED 90 DEG ONTO THE X-WIND LEG THE ACFT STALLED. THE PLT INITIATED RECOVERY BUT NOT IN TIME TO AVOID COLLIDING WITH THE GROUND. THE PLT RECEIVED MINOR INJURIES. WINDS WERE REPORTED TO BE 300 DEG AT 19 KTS WITH GUSTS TO 26 KTS.

## Aircraft

- Registration: [N63915](https://openairdocs.org/deregistered/N63915-2013-04-29), registration cancelled 2013-04-29, S/N 75-3256 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 753256
- Engines: P&W R985AN1 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Warren Walkinshaw, doing business as Walkinshaw Aircraft Spraying
- Registered owner: Warren V Walkinshaw
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 1, 1987
- Departed: 59Y, ARGUSVILLE, ND

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: rear; flight hours: 367 total, 53 in this make and model, 281 as pilot in command, 16 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 19 knots, gusting 26
- Visibility: 20 statute miles
- Lowest ceiling: 25,000 ft overcast
- Temperature: 70 °F, dew point 30 °F
- Altimeter: 29.00 inHg
- Observed at: FAR, 11 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 19870416010289A](https://openairdocs.org/incident/19870416010289A), Apr 16, 1987: Boeing A75N1, Argusville, ND, Destroyed. The aircraft stalled during aerial application maneuvers. The pilot was turning downwind.

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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