CHI86LA084

NTSB accident investigation · Cessna 207 · Milwaukee, WI · February 10, 1986

Accident · No injuriesLimited investigationFinal report
Date
February 10, 1986, 09:20 local (15:20 UTC)
Place
Milwaukee, WI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N18SACessna 207
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860210002479A
Case key
13421

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/malfClimb - to cruise
Maintenance,replacement - improperOther maintenance personnelFactor
Maintenance,service of aircraft/equipment - improperOther maintenance personnelCause
Aircraft preflight - inadequatePilot in commandCause
Forced landingDescent - emergency
On ground/water collision with objectLanding - roll
Object - utility pole

Analysis

After preheating the eng the plt took off and during climb the cabin filled with smoke and the eng stopped. A forced landing was made on a city street during which the left wing contacted a sign pole. Post accident teardown of the eng disclosed that an oil temp control valve required to retain the eng oil in the crankcase until proper operating temp is attained was not installed. Without this temp valve, oil is permitted to flow through the oil cooler. The plt also failed to visually check the viscosity of the oil after preheating the eng.

Aircraft

Registration
N18SA
Reported as
Cessna 207
Category
Airplane
Serial number
20700272
Airframe hours
5,350
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Burley Harding
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 27, 1985
Departed
MKE · Milwaukee, WI
Destination
CWA · Mosinee, WI

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
32
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
3,000 total · 2,360 in this make and model · 2,740 as pilot in command · 180 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 9 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
7 °F, dew point 3 °F
Altimeter
30.00 inHg
Observed at
MKE, 3 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.