FTW96LA329

NTSB accident investigation · Grumman G-164A · Burlington, CO · July 31, 1996

Accident · No injuriesLimited investigationFinal report
Date
July 31, 1996, 08:00 local (14:00 UTC)
Place
Burlington, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N25SKGrumman G-164A
Weather
Visual (VMC) · Day
Status
Completed · report February 18, 1997
Report
Approved by Office Director
FAA report
19960731020289A
Case key
19930

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

The total loss of engine power resulting from a cracked cylinder. A factor was the unsuitable terrain for the forced landing.

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
Engine assembly,cylinder - crackedCause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterEmergency landing
Terrain condition - none suitableFactor
Terrain condition - ditch
Nose overLanding - roll

Analysis

The pilot reported that he was returning from spraying a field when the engine lost power. He performed a forced landing to an alfalfa field. The airplane's left landing gear impacted a ditch, and the airplane came to a stop in an inverted position. The FAA inspector on the scene reported that a crack was found on the bottom number 5 cylinder.

Factual narrative

On July 31, 1996, at 0800 mountain daylight time, a Grumman G-164A, N25SK, registered to Steggs Flying Service and operated by Seelhoff Aerial Spraying, was substantially damaged during a forced landing near Burlington, Colorado. The airline transport rated pilot, the sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed for the Title 14 CFR Part 137 aerial application flight. A flight plan was not filed for the local flight that began approximately one hour before the accident.

The pilot reported that he was returning from spraying a field when the engine lost power. The pilot performed a forced landing to an alfalfa field. The airplane's left landing gear impacted a ditch made by a pivotal sprinkler system, and the airplane came to a stop in an inverted position. The top wing, the empennage, and the propeller were all damaged in the impact sequence.

The FAA inspector on the scene reported that, when the engine was inspected, a crack was found on the bottom number 5 cylinder.

Aircraft

Registration
N25SK
Reported as
Grumman G-164A
Category
Airplane
Serial number
1335
Airframe hours
3,882
Engine
P&W R-1340, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Ron Seelhoff, doing business as Seelhoff Aerial Spraying
Registered owner
Steggs Flying Service
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 11, 1996 · 150 hours before
Departed
ITR

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
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
3,145 total · 358 in this make and model · 2,790 as pilot in command · 150 in the last 90 days · 60 in the last 30 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 2 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 55 °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 N25SK · 2

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