SEA89LA115

NTSB accident investigation · Grumman-Schweizer G-164A · Battle Mountain, NV · June 21, 1989

Accident · No injuriesLimited investigationFinal report
Date
June 21, 1989, 09:55 local (16:55 UTC)
Place
Battle Mountain, NV
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N9830Grumman-Schweizer G-164A
Weather
Visual (VMC) · Day
Status
Completed · report August 2, 1990
Report
Approved by Office Director
FAA report
19890621016779A
Case key
41035

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

On this page

Probable cause

The loss of engine power in flight due to a broken number two rocker arm. Contributing to the accident was the vehicle on the road which resulted in the pilot flaring prematurely.

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(total) - mech failure/malfCruise - normal
Engine assembly,rocker arm/tappet - failure,totalCause
Forced landingDescent - emergency
Loss of control - in flightLanding - flare/touchdown
Object - vehicleFactor
Flare - prematurePilot in commandCause
Hard landingLanding - flare/touchdown
Nose overLanding - roll

Analysis

During cruise flight, the engine lost power. The pilot initiated a forced landing on a road, flared high to avoid impact with a vehicle on the road and the aircraft stalled, resulting in a hard landing. The aircraft impacted a fence and nosed over into a ditch. Inspection of the engine revealed a broken number two rocker arm.

Aircraft

Registration
N9830
Reported as
Grumman-Schweizer G-164A
Category
Airplane
Serial number
1257
Airframe hours
2,948
Engine
P&W R-1340-AN-1, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Ferry · Part 91
Operator
Gaudry Ag Services, Inc.
Registered owner
Gaudry Ag Services, Inc
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · June 9, 1989 · 5 hours before
Departed
WMC · Winnemucca, NV
Destination
EKO · Elko, NV

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
41
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
5,000 total · 19 in this make and model · 4,901 as pilot in command · 19 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 15 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 10 °F
Altimeter
30.00 inHg
Observed at
BAM, 18 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.

Other investigations on N9830 · 3

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