ATL90LA159

NTSB accident investigation · Cessna 172 · Ridge Spring, SC · August 13, 1990

Accident · No injuriesLimited investigationFinal report
Date
August 13, 1990, 11:30 local (15:30 UTC)
Place
Ridge Spring, SC
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N66068Cessna 172
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1992
Report
Approved by Office Director
FAA report
19900813033019A
Case key
8263

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 failure of the maintenance facility/owner to follow standard preventive maintenance procedures. A factor was the pilot's failure to extend the flaps during the forced landing.

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) - mech failure/malfCruise - normal
Engine assembly,valve,exhaust - jammedCause
Maintenance,overhaul,major - not performedCompany maintenance personnelCause
Forced landingDescent - emergency
Lowering of flaps - not performedPilot in commandFactor
In flight collision with objectLanding - roll
Terrain condition - ditchFactor

Analysis

The pilot was established at cruise when he heard a loud bang. Shortly afterward, the engine quit. The pilot selected an open field for the emergency landing. After clearing a tree line the pilot made a normal touchdown. During the landing roll the nose gear collided with a ditch, and the airplane nosed over. The nose gear collapsed. The engine examination found no.4 exhaust valve stuck and the push rod/housing assemblies were displaced from their normal positions. The engine was 345 hours over the suggested overhaul time in service when the valve stuck. The pilot also failed to extend the wing flaps during the emergency procedure.

Aircraft

Registration
N66068
Reported as
Cessna 172
Category
Airplane
Serial number
17275958
Airframe hours
2,345
Engine
Lycoming O-320-D2J, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Mmb Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · June 24, 1990 · 95 hours before
Departed
CAE · Columbia, SC
Destination
48J · Thomson, GA

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
29
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
1,500 total · 370 in this make and model · 1,439 as pilot in command · 156 in the last 90 days · 61 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
220° at 5 knots
Visibility
7 statute miles
Lowest ceiling
None
Temperature
88 °F, dew point 79 °F
Altimeter
30.00 inHg
Observed at
CAE, 30 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.