# NTSB MKC90DPG02: Aero Commander S-2R, N8940Q, Alicia, AR, June 1, 1990

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Final report
- Date: June 1, 1990, 10:15 local (15:15 UTC)
- Place: Alicia, AR
- Coordinates: 36.060798, -90.949157 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.0608&lon=-90.9492&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report October 2, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 34870
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC90DPG02
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34870/pdf
- Page: https://openairdocs.org/ntsb/MKC90DPG02

## Probable cause

THE PILOT'S FAILURE TO MAINTIAN AIRSPEED DURING THE TURN TO REVERSE DIRECTION FOR A SWATH RUN.

## Sequence of events

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

- Loss of control - in flight, maneuvering - turn to reverse direction
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

ACCORDING TO THE FLAGMAN FOR THE AERIAL APPLICATOR THE PILOT HAD COMPLETED HIS FIRST SWATH RUN AND INITIALLY PULLED UP AND TURNED RIGHT. HE THEN REVERSED HIS TURN TO THE LEFT IN ORDER TO ALIGN THE AIRPLANE FOR THE SECOND PASS. THE FLAGMAN OBSERVED THE AIRPLANE TO BE STILL IN THE LEFT TURN NEARING THE SWATH RUN HEADING WHEN THE RIGHT WING SEEMED TO GET TOO HIGH. HE STATED 'HIS RIGHT WING JUST SEEMED TO KEEP COMING OVER TILL HE WAS 3/4 COCKED AND GOING STRAIGHT DOWN TO THE GROUND.' AFTER CONTACTING WIRES THE AIRPLANE COLLIDED WITH THE GROUND IN A RESIDENTIAL STREET AND WAS INVOLVED IN AN INTENSE POST CRASH FIRE.

## Aircraft

- Registration: [N8940Q](https://openairdocs.org/deregistered/N8940Q-1990-12-29), registration cancelled 1990-12-29, S/N 2361R (OpenAirDocs)
- Reported make and model: Aero Commander S-2R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Category: Airplane
- Serial number: 2361R
- Airframe hours: 3580
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Terry Robinett, doing business as Walnut Ridge Flying Serv.Inc.
- Registered owner: Nick N Vaccari
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, March 10, 1990, 150 hours before
- Airport: ARG, Walnut Ridge

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; commercial; airplane ratings: single-engine land, single-engine sea, multi-engine land; instrument ratings: airplane; medical: class 2, invalid medical for flight; toxicology performed; flight hours: 4,000 total, 400 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 170° at 8 knots
- Visibility: 7 statute miles
- Lowest ceiling: 4,000 ft broken
- Temperature: 75 °F, dew point 68 °F
- Altimeter: 30.00 inHg
- Observed at: JBR, 21 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 19900601021619A](https://openairdocs.org/incident/19900601021619A), Jun 1, 1990: Ayres S2RR1340REST, Alicia, AR, Destroyed, 1 fatal. Stalled and impacted asphalt street in vertical dive while maneuvering for a spray run.

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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