LAX86FA326

NTSB accident investigation · Cessna 182N · Wilmington, CA · August 20, 1986

Accident · Serious injuriesField investigationFinal report
Date
August 19, 1986, 21:51 local (Aug 20, 1986, 04:51 UTC)
Place
Wilmington, CA
Injuries
2 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N92252Cessna 182N
Weather
Visual (VMC) · Night/bright
Status
Completed · report January 25, 1988
Report
Approved by Office Director
FAA report
19860819040889A
Case key
24937

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

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
Engine assembly,valve,intake - inoperativeCause
Engine assembly,other - overtorqueCause
Maintenance,installation - improperOther maintenance personnelCause
Documentation - improperOther maintenance personnelCause
Acft/equip,inadequate standard/requirementManufacturerFactor
Forced landingDescent - emergency
Terrain condition - none suitableFactor
In flight collision with objectDescent - emergency
Object - wire,transmissionFactor
Object - fenceFactor
Object - building(nonresidential)Factor

Analysis

During a local night instructional flt the plts reported that the eng began to run very rough and eventually quit when power was reduced slightly to begin the descent for the destination arpt. The acft struck power lines, two small buildings and a brick wall during the night forced landing in an industrial area. Examination of the eng revealed that the number one cylinder exhaust valve rocker arm shaft boss journal had failed. Tests of an identical eng duplicating the boss journal failure in a test cell replicated the eng power loss as described by the crew. The cylinder had been changed 27 hours prior to the accident. Evidence indicated that the rocker arm shaft keeper bolt had been over torqued during the overhaul.

Aircraft

Registration
N92252
Reported as
Cessna 182N
Category
Airplane
Serial number
18260112
Airframe hours
1,248
Engine
Continental O-470-R, 230 horsepower, reciprocating
Damage
Destroyed
Flight
Instructional · Part 91
Registered owner
Net Development Company
Airworthiness certificate
Standard, Normal
Last inspection
Annual · April 26, 1986 · 27 hours before
Departed
FUL · Fullerton, CA
Destination
LGB · Long Beach, CA

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
34
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
846 total · 200 in this make and model · 726 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) · Night/bright
Wind
340° at 6 knots
Visibility
25 statute miles
Lowest ceiling
12,000 ft broken
Temperature
77 °F, dew point 54 °F
Altimeter
29.00 inHg
Observed at
LGB, 6 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.

Other investigations on N92252 · 1

Matched to the same aircraft by N-number and date.