MKC87LA115

NTSB accident investigation · Ayres S2R600 · Lepanto, AR · June 2, 1987

Accident · No injuriesLimited investigationFinal report
Date
June 2, 1987, 08:00 local (13:00 UTC)
Place
Lepanto, AR
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N4943XAyres S2R600
Weather
Visual (VMC) · Day
Status
Completed · report May 9, 1988
Report
Approved by Office Director
FAA report
19870602021229A
Case key
34392

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(partial) - mech failure/malfCruise
Engine assembly,rocker arm/tappet - crackedCause
Engine assembly,valve,intake - jammedFactor
Forced landingCruise
Nose overLanding - roll
Terrain condition - softCause

Analysis

The PIC had taken off for a LCL aerial operation. Enroute PIC had an engine failure and made a forced ldg in a muddy field. PIC applied brakes and acft nosed over. The exhaust rocker arm box on no. 3 cylinder was found to be cracked keeping exhaust valve in closed position.

Aircraft

Registration
N4943X
Reported as
Ayres S2R600
Category
Airplane
Serial number
5004R
Airframe hours
2,267
Engine
P&W R-1340-AN1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Helm Flying Service
Airworthiness certificate
Special, Restricted (Special)

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
34
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
6,000 total · 2,000 in this make and model · 6,000 as pilot in command · 100 in the last 90 days · 100 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 7 knots
Lowest ceiling
None
Temperature
-0 °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.

Other investigations on N4943X · 1

Matched to the same aircraft by N-number and date.