CHI00LA012

NTSB accident investigation · Cessna A188B · Sprague, NE · October 20, 1999

Accident · Minor injuriesLimited investigationFinal report
Date
October 20, 1999, 08:45 local (13:45 UTC)
Place
Sprague, NE
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N731PUCessna A188B
Weather
Visual (VMC) · Day
Status
Completed · report January 18, 2001
Report
Approved by Office Director
FAA report
19991020047169A
Case key
47619

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

Engine failure due to fouled and rusted spark plugs, and a clogged fuel filter. Factors relating to this accident were the inadequate annual inspection performed on the airplane, the trees and the ditch.

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 powerManeuvering - aerial application
Ignition system,spark plug - fouledCause
Fuel system,filter - obstructedCause
Maintenance,annual inspection - inadequateOwner/pilot mechanicFactor
Maintenance,compliance with ad - not complied withOwner/pilot mechanic
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)Factor
Nose overEmergency descent/landing
Terrain condition - ditchFactor

Analysis

The pilot said that he was flying to the north around 20 feet above the ground, when the engine quit. 'There was no sputtering or warning. It just quit.' The pilot checked the throttle and pulled on the flaps to slow the airplane. 'There was no place to land, so I went into some trees and hit a ditch which flipped me over.' Examination of the airplane's engine revealed that the bottom spark plugs were lead-fouled, and rusted. Examination of the other airplane systems revealed no anomalies. Further examination of the engine revealed that the fuel strainer filter was clogged with debris identified as dirt and rust. An examination of the airplane's maintenance records showed that several airworthiness directives applicable to the airplane had not been complied with. Additionally, several airplane system items requiring annual inspection under 14 CFR part 43 had not been accomplished.

Factual narrative

On October 20, 1999, at 0845 central daylight time, a Cessna A188B, N731PU, sustained substantial damage when it struck a berm, brush, and trees, before nosing over. Subsequent to the impact, the airplane's engine lost power while maneuvering following a chemical application pass to a farm field near Sprague, Nebraska. Visual meteorological conditions prevailed at the time of the accident. The aerial application flight was being conducted under 14 CFR Part 137. No flight plan was on file. The pilot sustained minor injuries in the accident. The local flight originated from the pilot's private airstrip at Adams, Nebraska.

In his written statement, the pilot said that he was flying to the north around 20 feet above the ground, when the engine quit. The pilot said he checked the throttle and pulled on the flaps to slow the airplane. "There was no place to land, so I went into some trees and hit a ditch which flipped me over."

The pilot told a Federal Aviation Administration (FAA) inspector that he had just completed his final pass on the field and was getting ready to return to his airstrip when the engine just quit. "There was no sputtering or warning. It just quit."

A FAA inspector examined the airplane at the accident site. The airplane was resting upside-down in a field, next to a ditch. Both wings were bent back. The left wing spar was bent aft. The main landing gear were twisted. The top of the airplane's fuselage was crushed inward slightly. The vertical stabilizer and rudder were crushed inward and bent over. Flight control continuity was confirmed. Examination of the airplane's engine revealed that the bottom spark plugs were lead-fouled, and rusted. Examination of the other airplane systems revealed no anomalies.

Further examination of the engine revealed that the fuel strainer filter was clogged with debris identified as dirt and rust. An examination of the airplane's maintenance records showed that several airworthiness directives applicable to the airplane had not been complied with. Additionally, several airplane system items requiring annual inspection under 14 CFR part 43 had not been accomplished.

Aircraft

Registration
N731PU
Reported as
Cessna A188B
Category
Airplane
Serial number
18803055T
Airframe hours
3,807
Engine
Continental IO-520, 285 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
James Clyde Young
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · May 23, 1999 · 25 hours before
Departed
Adams, 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
48
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
9,000 total · 8,900 in this make and model

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
28 °F, dew point 27 °F
Altimeter
30.00 inHg
Observed at
LNK, 16 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.