FTW94LA083

NTSB accident investigation · Cessna 172N · Georgetown, AR · February 16, 1994

Accident · No injuriesLimited investigationFinal report
Date
February 16, 1994, 09:20 local (15:20 UTC)
Place
Georgetown, AR
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N737ZYCessna 172N
Weather
Visual (VMC) · Day
Status
Completed · report November 14, 1994
Report
Approved by Office Director
FAA report
19940216002569A
Case key
18999

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

A carburetor icing induced power loss due to the pilot's improper use of carburetor heat in conditions conducive to carburetor icing. A factor was the lack of suitable terrain onto which a forced landing could be executed.

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(partial) - nonmechanicalCruise
Weather condition - carburetor icing conditions
Carburetor heat - improper use ofPilot in commandCause
Fuel system,carburetor - iceCause
Forced landingDescent - emergency
On ground/water collision with objectLanding - roll
Object - utility pole
Terrain condition - none suitableFactor

Analysis

The pilot stated that after circling a town several times while attempting to find a private air strip, he decided to fly to a nearby airport. Shortly thereafter the engine began running rough and losing RPM. The pilot's efforts to regain power were unsuccessful and the airplane would not sustain level flight. He elected to execute a forced landing on a gravel road. Touchdown was successful; however, after a short ground roll, the pilot lifted the airplane off again to avoid hitting a high tree stump. After touching down the second time the left wing struck a telephone pole and the airplane yawed into a ditch. The icing probability charts indicated the potential for serious icing existed at cruise power for the atmospheric conditions that were present. Temperature and dew point were 48 and 35 degrees f, respectively.

Factual narrative

On February 16, 1994, at approximately 0920 central standard time, a Cessna 172N, N737ZY, was substantially damaged during a forced landing near Georgetown, Arkansas. The airplane, flown by a private pilot, was on a personal cross country flight. There was no flight plan filed and visual meteorological conditions prevailed. Neither the pilot, nor the one passenger were injured.

According to the pilot, he found water in both tanks during the preflight inspection and he sumped the tanks until none was present. He departed Marked Tree, Arkansas, at 0830, and proceeded to Georgetown. Upon arriving in the Georgetown area, he was unable to find a grass strip that his passenger said was there. He stated that after circling the town several times at 1,200 feet MSL, he decided to go to Searcy, Arkansas, which was about 5 miles distant. The pilot further stated that shortly thereafter the engine began running rough and lost RPM. His efforts to alleviate the problem were unsuccessful and the RPM continued to drop. He stated that he checked the primer, fuel selector, and mixture, however; he was unsure whether he applied carburetor heat and if so for how long.

The pilot stated he could not sustain level flight and elected to execute a forced landing to a gravel road. He stated that touchdown was normal, but he then noticed a 7 foot high stump on the right side of the road and lifted the airplane off again to clear the stump. After touching down the second time the left wing struck a telephone pole and the airplane yawed into a ditch.

In his post-accident report the pilot stated he suspected carburetor ice as the reason for the power loss. The icing probability charts indicated the potential for serious icing existed at cruise power settings for the atmospheric conditions that were present.

Aircraft

Registration
N737ZY
Reported as
Cessna 172N
Category
Airplane
Serial number
17269813
Airframe hours
4,416
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Mcguire, Eric A.
Registered owner
Dowty, Gene
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 9, 1993 · 112 hours before
Departed
6M8 · Marked Tree, AR
Destination
M07 · Searcy, AR

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
21
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
306 total · 141 in this make and model · 237 as pilot in command · 86 in the last 90 days · 30 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
48 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
BVX, 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.