# NTSB FTW88DQG02: Air Tractor AT-301, N73127, Lockney, TX, October 19, 1987

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: October 19, 1987, 16:30 local (21:30 UTC)
- Place: Lockney, TX
- Coordinates: 34.120689, -101.44065 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.1207&lon=-101.4407&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report January 25, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 22466
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW88DQG02
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22466/pdf
- Page: https://openairdocs.org/ntsb/FTW88DQG02

## 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
  - maneuver - initiated
  - airspeed - inadequate, pilot in command (cause)
  - stall/spin - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

AFTER COMPLETING A SWATH RUN, THE PLT BEGAN A PROCEDURE TURN TO THE RIGHT FOR ANOTHER RUN. DURING THE MANEUVER, THE ACFT STALLED & TURNED COUNTERCLOCKWISE FOR ABOUT 180 DEG BEFORE IMPACTING THE GROUND IN A NOSE DOWN, LEFT WING LOW ATTITUDE.

## Aircraft

- Registration: [N73127](https://openairdocs.org/aircraft/N73127), registered now, S/N 301-0667, built 1987 (OpenAirDocs)
- Reported make and model: AIR TRACTOR AT-301
- Registry model: [Air Tractor AT-400A](https://openairdocs.org/model/air-tractor-at-400a) (registry code 0390203) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-20](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-20) (registry code 52239, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 301-0667
- Airframe hours: 275
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Probasco Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 12, 1987, 275 hours before
- Departed: Q41, FLOYDADA, TX

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 1,300 total, 275 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 12 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point 48 °F
- Altimeter: 30.00 inHg
- Observed at: LBB, 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 19871019060219A](https://openairdocs.org/incident/19871019060219A), Oct 19, 1987: Airtrc AT301, Lockney, TX, Substantial damage. Crashed during an aerial application maneuver. Cause was a stall spin maneuver at a low altitude in a turn around.

## Other investigations on N73127 (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 FTW97LA169](https://openairdocs.org/ntsb/FTW97LA169), Apr 19, 1997: Air Tractor AT-400 (N73127), Fluvanna, TX, substantial damage. Probable cause: The loss of engine power due to the failure of the reduction gear box. A factor was the lack of suitable terrain for the forced landing.

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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