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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

November 3, 1996 · Cessna 177A · N30614

Kirksville, MO

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
November 3, 1996
Injury Outcomes
1 injury (1 minor injury), 3 uninjured
Location
Kirksville, MO
Aircraft
Cessna 177A
Tail Number
N30614
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
CHI97LA021

The airplane had been flying about 3 minutes when the pilot heard a slapping sound. This sound was followed by a windshield covered with oil, a violent shake from the engine, and smoke in the cockpit. The pilot made a forced landing in a field. When the nosewheel touched the field's surface, the airplane nosed over onto its back. An examination of the engine revealed the #2 rod was broken at its crankshaft attachment point. The crankshaft journal was black/blue in color and had multiple grooves around its surface. The bearing was separated into many pieces of various sizes. These pieces were also black/blue in color. According to the pilot, the engine was overhauled 224 hours before the accident. Paperwork associated with the overhaul showed that the engine was being disassembled due to metal chips in the oil filter and a spun connecting rod bearing on cylinder #3. The engine's overhaul was its first since it was new.

NTSB Probable Cause

an improper maintenance overhaul by company maintenance personnel which led to a bearing failure. The soft terrain was a factor.

Full Narrative

On November 3, 1996, at 1430 central standard time, a Cessna 177A, N30614, piloted by a private pilot, was substantially damaged when it nosed over following a forced landing after experiencing a total loss of engine power. The personal 14 CFR Part 91 flight was not operating on a flight plan. Visual meteorological conditions prevailed at the time of the accident. The pilot and two passengers reported no injuries. A third passenger reported minor injuries. The flight departed Kirksville, Missouri, exact time unknown. According to the pilot's written statement, he heard a "...slapping sound approximately 3 minutes into [the] flight." The sound was followed by oil on the windscreen and "...violent engine shake, [and] smoke in the cockpit. He said the engine stopped running. The pilot said he landed the airplane tail low. Shortly after touching down the airplane's nosewheel touched the landing surface. The airplane's nose gear assembly separated from the airframe and the airplane nosed over. An on-scene investigation was conducted by a Federal Aviation Administration Principal Maintenance Inspector. The engine's inspection revealed that the number 2 rod was broken at its crankshaft attachment point. The crankshaft journal was dark black/blue in color. The journal had many irregularly shaped groves around it. The connecting rod bearing had separated into many various sized pieces. These pieces were also colored black/blue. The crankshaft oil holes were unobstructed except the number 2 journal. The exit opening had small pieces of black/blue metal in it. A report found in N30614's engine logbook dated July 1, 1994, showed the engine was disassembled for overhaul. The report showed this engine had been overhauled on July 1, 1994, and mounted on N30614 on July 15, 1994. According to the report, the engine was being "...disassembled... due to metal chips in the oil filter. The report said, "Inspection revealed number 3 rod bearing had spun." This was the engine's first overhaul since it was new. According to the PMI, the engine logbook showed it had 224.0 hours since it was overhauled.

Flight

Event TypeAccident
Event Time14:30 CST
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireUnknown
Aircraft ExplosionUnknown

Aircraft

AircraftCessna 177A
Tail NumberN30614
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A2F · Reciprocating · 180
Seats4

People & Injuries

Injury Summary1 injury (1 minor injury), 3 uninjured
Fatal0
Serious0
Minor1
Uninjured3
Total4
Crew 1Age 49 · Third Class

Conditions

ConditionsVMC
LightDaylight
Wind210° @ 14 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point55 / 0 C
Altimeter30.00 inHg
Observation Time20:45
Weather SourceWFAC

Appendix: Source Data