CHI95LA023

NTSB accident investigation · Cessna 172F · Cross Plains, WI · October 22, 1994

Accident · No injuriesLimited investigationFinal report
Date
October 22, 1994, 10:40 local (15:40 UTC)
Place
Cross Plains, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N7969UCessna 172F
Weather
Visual (VMC) · Day
Status
Completed · report February 24, 1995
Report
Approved by Office Director
FAA report
19941022035709A
Case key
9786

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 pilot's failure to use carburetor heat. Factors were carburetor icing conditions and rough/uneven terrain.

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 powerCruise
Weather condition - carburetor icing conditionsFactor
Fuel system,carburetor - ice
Carburetor heat - not usedPilot in commandCause
Forced landingDescent - emergency
Nose overLanding - roll
Terrain condition - rough/unevenFactor
Unsuitable terrain or takeoff/landing/taxi area - encounteredPilot in command

Analysis

The pilot stated that he was cruising at 5,000 MSL and reduced the engine RPM to between 1,000 and 1,200 during a descent to 2,000 MSL. When he attempted to level off with power the engine did not respond. He made a forced landing in a rough/uneven field. He told an inspector from the FAA that he pumped the throttle and moved the mixture to rich, but he did not use the carburetor heat. A weather reporting station ten miles east of the accident site was reporting a temperature of 60 degrees (f) and a dew point of 51 degrees (f), at the time of the accident. Conditions were conducive to carburetor icing.

Factual narrative

On October 22, 1994, at 1040 central daylight time, a Cessna 172F, N7969U, registered to Daniel F. Meger of Waterford, Wisconsin, and operated by a private pilot, lost engine power when the pilot attempted to level off after a descent. A forced landing in a field near Cross Plains, Wisconsin, resulted in substantial damage to the airplane when it nosed over. The pilot reported no injuries. The personal 14 CFR Part 91 flight was operating in visual meteorological conditions. No fight plan was on file. The local flight departed Waukesha, Wisconsin, at 0930.

The pilot stated that he was cruising at 5,000 feet mean sea level (msl) and started a descent by reducing the power to 1,000 to 1,200 rpm. When he attempted to level off at 2,000 feet msl the engine did not respond. He told an inspector from the Federal Aviation Administration (FAA) that he had pumped the throttle and adjusted the mixture to rich, but did not use the carburetor heat.

The nearest weather reporting station was at Madison, Wisconsin, ten miles east of the accident site. An observation five minutes prior to the accident showed the temperature to be 68 degrees (F) and the dew point as 51 degrees (F). An "Icing Probability Curves" chart from the Airmen's Information Manual is attached to this report.

Subsequent to the accident the airplane was inspected by the FAA and the engine was test run. A report of that inspection is attached to this report. No anomalies were noted and the engine functioned.

Aircraft

Registration
N7969U
Reported as
Cessna 172F
Category
Airplane
Serial number
17251969
Airframe hours
4,100
Engine
Continental O-300-D, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Schuning, Richard E.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 1, 1994 · 32 hours before
Departed
UES · Waukesha, WI
Destination
UES

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
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
740 total · 60 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 12 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 52 °F
Altimeter
29.00 inHg
Observed at
MSN, 10 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.