CHI96LA213

NTSB accident investigation · Cessna 172 · Conway, MI · June 23, 1996

Accident · No injuriesLimited investigationFinal report
Date
June 23, 1996, 15:30 local (19:30 UTC)
Place
Conway, MI
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N3823SCessna 172
Weather
Visual (VMC) · Day
Status
Completed · report February 18, 1997
Report
Approved by Office Director
FAA report
19960623019769A
Case key
10285

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 crack in the intake manifold which led to oil exhaustion and subsequent piston failure. A factor was the soft field.

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/malfCruise
Induction air control,intake manifold - crackedCause
Fluid,oil - exhaustionCause
Engine assembly,piston - failure
Forced landingEmergency descent/landing
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - softFactor

Analysis

The pilot reported that he was in cruise flight at 3000 feet when he noticed an engine vibration and a mist of oil on the aircraft's windshield. The engine stopped a minute later. He set up for a forced landing in a field while he tried restarting the engine. The engine restarted and ran at about 50 percent power before it stopped again. The aircraft was at about 800 feet above ground level and on final approach for a corn field. The pilot reported that he touched down on the main wheels first. The ground was soft and the nose wheel dug into the ground. The aircraft tipped up on its nose and left wing before settling back down on its main landing gear. During the examination of the engine, it was determined that there was a hole in the crankcase near the number five cylinder, and no oil remained in the crankcase. The number five connecting rod was bent and the piston and pin were missing. A crack in the intake manifold with fuel stains below the crack was found.

Factual narrative

On June 23, 1996, at 1530 eastern daylight time, a Cessna 172, N3823S, sustained substantial damage during a forced landing due to loss of engine power near Conway, Michigan. During the emergency landing in a corn field, the airplane tipped up on its nose and left wing, damaging the left wing spar. The commercial pilot and one passenger reported no injuries. The 14 CFR Part 91 flight departed Riverview Airport, Jenison, Michigan, en route to Mackinac Island, Michigan. Visual meteorological conditions prevailed and no flight plan was filed.

The pilot reported that he was in cruise flight at 3000 feet when he noticed an engine vibration and a mist of oil on the aircraft's windshield. The engine stopped a minute later. He set up for a forced landing in a field while he tried restarting the engine. The engine restarted and ran at about 50 percent power before it stopped again. The aircraft was at about 800 feet above ground level and on final approach for a corn field. The pilot reported that he touched down on the main wheels first. The ground was soft and the nose wheel dug into the ground. The aircraft tipped up on its nose and left wing before settling back down on its main landing gear.

During the examination of the engine it was determined that there was a whole in the crankcase near the number five cylinder, and no oil remained in the crankcase. The number five connecting rod was bent and the piston and pin were missing. A crack in the intake manifold with fuel stains below the crack was found.

Aircraft

Registration
N3823S
Reported as
Cessna 172
Category
Airplane
Serial number
17251023
Airframe hours
2,801
Engine
Franklin 6A4-165-B3, 215 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Accurate Automotive
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 1, 1996 · 40 hours before
Departed
08C · Jenison, MI
Destination
Y84 · Mackinac Island, MI

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
24
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,800 total · 400 in this make and model · 1,650 as pilot in command · 150 in the last 90 days · 60 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
350° at 4 knots
Visibility
10 statute miles
Lowest ceiling
9,000 ft overcast
Temperature
61 °F, dew point 54 °F
Altimeter
30.00 inHg
Observed at
PLN, 20 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.