BFO89LA001

NTSB accident investigation · Cessna 172 · Sandston, VA · October 6, 1988

Accident · Minor injuriesLimited investigationFinal report
Date
October 6, 1988, 16:00 local (20:00 UTC)
Place
Sandston, VA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N739PECessna 172
Weather
Visual (VMC) · Day
Status
Completed · report January 4, 1990
Report
Approved by Office Director
FAA report
19881006046049A
Case key
11478

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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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/malfApproach - vfr pattern - final approach
Accessory drive assy,drive gear - previous damageCause
Maintenance - inadequateOther maintenance personnelCause
Accessory drive assy,drive gear - failure,totalCause
Engine assembly,camshaft - disengagedFactor
Ignition system,magneto - disengagedFactor
Forced landingDescent - emergency
Gear collapsedLanding
Terrain condition - softFactor
Landing gear,nose gear - overload
Nose overLanding

Analysis

The plt said he was on final apch about 600 to 800 ft AGL when power loss occurred. He forced landed on an open field about 1/2 mi short of the rwy. The eng exam revealed that two teeth of the idler gear had separated. This resulted in a loss of continuity between the crankshaft, the camshaft, and the left magneto. Metallurgical exam disclosed that the teeth separated because of overload. The engine had been installed on another aircraft that was involved in an accident of which the details were not determined.

Aircraft

Registration
N739PE
Reported as
Cessna 172
Category
Airplane
Serial number
17270690
Airframe hours
3,083
Engine
Lycoming O-320-H2AD, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Randolph S. Scott
Registered owner
Randolph S Scott
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 6, 1988 · 8 hours before
Departed
LWB · Lewisburg, VA
Destination
RIC · Sandston, VA
Flight plan
VFR
Airport
RIC · Byrd Intl, runway 2, 6,607 × 150 ft, asphalt

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
36
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
129 total · 69 in this make and model · 98 as pilot in command · 30 in the last 90 days · 10 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 4 knots
Visibility
15 statute miles
Lowest ceiling
25,000 ft broken
Temperature
59 °F, dew point 34 °F
Altimeter
30.00 inHg
Observed at
RIC, 1 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.