# NTSB MKC84LA242: Ayres S2R, N4002P, Rohwer, AR, August 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 7, 1984, 14:30 local (19:30 UTC)
- Place: Rohwer, AR
- Coordinates: 33.760173, -91.279273 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.7602&lon=-91.2793&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33765
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA242
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33765/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA242

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, maneuvering - aerial application
  - engine assembly,master rod - failure,total (cause)
  - engine assembly,connecting rod - failure,total (cause)
- Forced landing, landing - flare/touchdown
  - terrain condition - high vegetation (contributing factor)
  - terrain condition - none suitable (contributing factor)
  - directional control - not possible, pilot in command (contributing factor)
  - ground loop/swerve - uncontrolled, pilot in command (cause)

## Analysis

THE PLT WAS UNABLE TO MAINTAIN ALT AFTER THE ENGINE FAILED. A FORCED LANDING WAS MADE IN A FIELD COVERED WITH 4 TO 6 FT TALL WEEDS. THE ACFT TRAVELED SIDEWAYS DURING THE LANDING. AFTER THE ACCIDENT, THE PLT OBSERVED A BROKEN ROD WHICH HAD PENETRATED THE CRANKCASE. FURTHER INSPECTION SHOWED THAT THE MASTER ROD WAS BROKEN.

## Aircraft

- Registration: [N4002P](https://openairdocs.org/deregistered/N4002P-1997-05-15), registration cancelled 1997-05-15, S/N 2476R (OpenAirDocs)
- Reported make and model: Ayres S2R
- Registry model: [Ayres S-2R](https://openairdocs.org/model/ayres-s-2r) (registry code 0970101) (OpenAirDocs)
- Category: Airplane
- Serial number: 2476R
- Airframe hours: 1392
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Mankin Flying Service Inc.
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, July 30, 1984, 41 hours before
- Departed: ROHWER, AR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 8,500 total, 1,800 in this make and model, 250 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point -0 °F

## 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 19840807041669A](https://openairdocs.org/incident/19840807041669A), Aug 7, 1984: Ayres S2RRESTD, Rohwer, AR, Substantial damage. Engine thru a rod thru the crank case during a spray run. High vegetation on the forced landing damaged fuselage.

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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