MKC89LA148

NTSB accident investigation · Grumman G-164B · Stockville, NE · July 2, 1989

Accident · No injuriesLimited investigationFinal report
Date
July 2, 1989, 12:00 local (17:00 UTC)
Place
Stockville, NE
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6629QGrumman G-164B
Weather
Visual (VMC) · Day
Status
Completed · report March 29, 1991
Report
Approved by Office Director
FAA report
19890702019579A
Case key
34822

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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Probable cause

Total failure of the powerplant caused by a broken cylinder.

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/malfManeuvering - aerial application
Powerplant - failure,totalCause
Engine assembly,cylinder - failure,totalFactor
Emergency procedure - attemptedPilot in commandFactor
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency
Terrain condition - none suitableFactor

Analysis

The pilot said that during an aerial application operation, the engine sustained a total mechanical failure. An emergency ldg was attempted which resulted in substantial damage to the acft and no injuries to the plt. Post accident investigation revealed a broken cylinder to be the cause of the engine failure.

Aircraft

Registration
N6629Q
Reported as
Grumman G-164B
Category
Airplane
Serial number
155B
Engine
P&W R-985-ANI, 450 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Nelson, Kenneth R., doing business as Nelson Flying Service
Registered owner
Ealy Spraying Service, Inc.
Airworthiness certificate
Special, Restricted (Special)
Departed
47V · Curtis, NE

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
58
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
5,000 total · 4,600 in this make and model · 200 in the last 90 days · 150 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 5 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 57 °F
Altimeter
29.00 inHg
Observed at
MCK, 25 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.