# NTSB SEA90LA154: Cessna 188B, N9632G, Denton, MT, August 3, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 2, 1990, 19:00 local (Aug 3, 1990, 01:00 UTC)
- Place: Denton, MT
- Coordinates: 47.449729, -109.919906 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.4497&lon=-109.9199&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 41256
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA90LA154
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/41256/pdf
- Page: https://openairdocs.org/ntsb/SEA90LA154

## Probable cause

THE PREMATURE LIFTOFF DURING TAKEOFF GROUND ROLL BY THE PILOT, RESULTING IN A STALL.

## Sequence of events

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

- Loss of control - in flight, takeoff
  - terrain condition - rough/uneven (contributing factor)
  - lift-off - premature, pilot in command (cause)
  - stall - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, takeoff

## Analysis

THE TAKEOFF ROLL WAS UPHILL IN A GRAIN STUBBLE FIELD. THE AIRPLANE ENTERED FRESHLY PLOWED GROUND AND LIFTED OFF. SHORTLY THERE AFTER, WHILE STILL IN GROUND EFFECT, THE ACFT CROSSED A GULLEY, STALLED, AND IMPACTED IN A WHEAT FIELD.

## Aircraft

- Registration: [N9632G](https://openairdocs.org/deregistered/N9632G-1991-12-13), registration cancelled 1991-12-13, S/N 18801572 (OpenAirDocs)
- Reported make and model: CESSNA 188B
- Registry model: [Cessna A188B](https://openairdocs.org/model/cessna-a188b) (registry code 2073005) (OpenAirDocs)
- Category: Airplane
- Serial number: 18801572
- Airframe hours: 3050
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Lohse Air Spraying
- Registered owner: Unknown
- Airworthiness certificate: Special, Restricted (Special)

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 8,000 total, 5,000 in this make and model, 200 in the last 90 days, 50 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 6 knots
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 72 °F, dew point 45 °F
- Altimeter: 30.00 inHg
- Observed at: LWT, 45 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 19900802030379A](https://openairdocs.org/incident/19900802030379A), Aug 2, 1990: Cessna A188B, Denton, MT, Substantial damage. Failed to climb out of ground effect after premature liftoff from plowed ground. Crossed gulley and stalled.

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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