# NTSB MIA86LA190: Aero Commander S2R, N8946Q, Valley Park, MS, June 24, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 24, 1986, 17:00 local (22:00 UTC)
- Place: Valley Park, MS
- Coordinates: 32.620227, -90.799591 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.6202&lon=-90.7996&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31658
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86LA190
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31658/pdf
- Page: https://openairdocs.org/ntsb/MIA86LA190

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - weather condition - crosswind (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - weather condition - tailwind (contributing factor)
  - weather condition - thunderstorm (contributing factor)
  - weather condition - windshear (contributing factor)
- On ground/water encounter with terrain/water, takeoff - roll/run

## Analysis

THE PLT STATED THAT A THNDRSTRM WAS IN THE IMMEDIATE AREA & HE TOOK OFF WITH A LEFT QUARTERING HEADWIND. DURING THE TAKE OFF ROLL, THE WIND SHIFTED & A LEFT QUARTERING TAILWIND BLEW THE ACFT INTO A DITCH. THE PLT ESTIMATED THE WINDS AT 50 TO 60 MPH.

## Aircraft

- Registration: [N8946Q](https://openairdocs.org/deregistered/N8946Q-2012-08-23), registration cancelled 2012-08-23, S/N 1616R, built 1972 (OpenAirDocs)
- Reported make and model: AERO COMMANDER S2R
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1616R
- Airframe hours: 5748
- Engines: P&W R1340-AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Phillip L.Lewis, doing business as Lewis Aviation
- Registered owner: Phillip L. Lewis
- Airworthiness certificate: Special, Restricted (Special)

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 12,000 total, 2,500 in this make and model, 40 in the last 90 days, 25 in the last 30 days, 12 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 5 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 95 °F, dew point 64 °F
- Altimeter: 29.00 inHg
- Observed at: JAN, 38 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 19860624048839A](https://openairdocs.org/incident/19860624048839A), Jun 24, 1986: Ayres S2RR1340REST, Valley Park, MS, Substantial damage. Wind shifted to a strong quartering tailwind on takeoff. Departed runway into a ditch. Thunderstorm had just passed.

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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