# NTSB ATL86FEK04: Ayres S2R-T15, N4015P, Mandale, OH, July 16, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 16, 1986, 19:25 local (23:25 UTC)
- Place: Mandale, OH
- Coordinates: 41.010131, -84.300102 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.0101&lon=-84.3001&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6983
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL86FEK04
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6983/pdf
- Page: https://openairdocs.org/ntsb/ATL86FEK04

## 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
  - aircraft handling - improper, pilot in command (cause)
  - maneuver - excessive, pilot in command (cause)
  - weather condition - turbulence (contributing factor)
- Forced landing, descent - emergency
- In flight collision with terrain/water, descent - emergency
  - terrain condition - crop (contributing factor)

## Analysis

THE ACFT STALLED IN TURBULENT AIR DURING A 180 TURN WHILE CROP SPRAYING AT ABOUT 150 FT AGL. THE PLT SAID HE INCREASED POWER & DROPPED THE ACFT NOSE WHILE TURNING AN ADDITIONAL 20 DEGREES TO AVOID TREES. THE RECOVERY OF POSITIVE CONTROL WAS IN PROCESS WHEN THE ACFT CONTACTED THE CORN CROP.

## Aircraft

- Registration: [N4015P](https://openairdocs.org/deregistered/N4015P-2014-10-07), registration cancelled 2014-10-07, S/N T15-004, built 1979 (OpenAirDocs)
- Reported make and model: AYRES S2R-T15
- Registry model: [Ayres S2R-T15](https://openairdocs.org/model/ayres-s2r-t15) (registry code 0970105) (OpenAirDocs)
- Registry engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: T15-004
- Airframe hours: 1264
- Engines: P&W PT6-27 750 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Operator: Ruhe Sales,Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, April 1, 1986, 121 hours before
- Departed: 390I, LEIPSIC, OH

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; flight instructor, commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 10,150 total, 2,500 in this make and model, 91 in the last 90 days, 16 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 4 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 77 °F
- Altimeter: 30.00 inHg
- Observed at: FDY, 29 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 19860716033909A](https://openairdocs.org/incident/19860716033909A), Jul 16, 1986: Ayres S2RT15RESTD, Mandale, OH, Substantial damage. Unable to clear trees at end of a spray run. Mushed into a muddy corn field short of tree line.

## Other investigations on N4015P (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 MIA08LA167](https://openairdocs.org/ntsb/MIA08LA167), Aug 17, 2008: Ayres S2R-T15 (N4015P), Morton, MS, substantial damage, 1 fatal. Probable cause: The pilot’s failure to maintain clearance from trees during low altitude maneuvering.

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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