CHI02LA276

NTSB accident investigation · Cessna T188C · Olivia, MN · September 10, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 10, 2002, 08:45 local (13:45 UTC)
Place
Olivia, MN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N9432JCessna T188C
Weather
Instrument (IMC) · Day
Status
Completed · report September 30, 2003
Report
Approved by Office Director
Parties
Minneapolis FSDO
FAA report
20020910024919A
Case key
55677

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 fouled spark plugs and the terrain condition encountered during the aborted takeoff.

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 powerTakeoff
Ignition system,spark plug - fouledCause
Forced landingDescent - emergency
In flight collision with terrain/waterTakeoff - aborted
Terrain condition - crop

Analysis

The agricultural airplane was substantially damaged during an off airport landing immediately after takeoff when the engine reportedly experienced a partial loss of power by about 200 rpm. The airplane came to rest in a cornfield about 1/2 mile from the runway. Inspection of the engine revealed that the number 1 and 3 spark plugs contained lead deposits and would not fire when under a pressure of 120 psi. The spark plugs were able to fire once they were cleaned.

Factual narrative

On September 10, 2002, at 0845 central daylight time, a Cessna T188C, N9432J, operated by Willmar Aerial Spraying Service Inc., was substantially damaged during an aborted takeoff from runway 29 (3,498 feet by 75 feet, asphalt) at Olivia Regional Airport, Olivia, Minnesota. Instrument meteorological conditions prevailed at the time of the accident. The 14 CFR Part 137 agricultural flight was not operating on a flight plan. The commercial pilot was uninjured. The local flight was originating at the time of the accident.

The pilot stated that immediately after takeoff, the engine started to lose power. The engine lost 200 rpm and the pilot elected to perform an aborted takeoff. The airplane came to rest on a corn field about 1/2 mile from the departure end of runway 29.

Examination of the engine by a Federal Aviation Administration revealed that the number 1 and number 3 lower spark plugs were oil filled and contained lead deposits. The oil was removed and the plugs were operationally checked under pressure. Under standard pressure, the plugs fired intermittently, and under pressure (120 psi) the plug did not fire. The plugs were then cleaned, tested, and subsequently fired under pressure.

Aircraft

Registration
N9432J
Reported as
Cessna T188C
Category
Airplane
Serial number
T18803804T
Airframe hours
4,883
Engine
Continental TSIO-520-T, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Willmar Aerial Spraying Inc.
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 29, 2002 · 150 hours before
Departed
OVL · Olivia, MN
Destination
OVL
Airport
OVL · Olivia Regional, runway 29, 3,498 × 75 ft, asphalt

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
37
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
February 21, 2002
Seat
Center
Flight hours
8,210 total · 1,500 in this make and model · 8,125 as pilot in command · 400 in the last 90 days · 120 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Wind
320° at 8 knots
Visibility
7 statute miles
Lowest ceiling
200 ft overcast
Temperature
59 °F, dew point 55 °F
Altimeter
30.15 inHg
Observed at
OVL

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.