ANC89FA155

NTSB accident investigation · Cessna 180 · Anchorage, AK · September 2, 1989

Accident · Minor injuriesField investigationFinal report
Date
September 2, 1989, 10:57 local (18:57 UTC)
Place
Anchorage, AK
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N2137ZCessna 180
Weather
Visual (VMC) · Day
Status
Completed · report June 18, 1990
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19890902035499A
Case key
5122

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

Oil leak in the oil cooler. Contributing factors were: oil film on the windshield, which obscured the pilot's vision (visual perception) and hampered his ability to attain proper runway alignment, an object (rock), and high vegetation beside the airstrip.

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.

Airframe/component/system failure/malfunctionCruise
Lubricating system,oil cooler - leakCause
Fluid,oil - leakCause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - roll
Window,flight compartment window/windshield - dirty(foggy)Factor
Proper alignment - not attainedPilot in commandFactor
Visual/aural perceptionFactor
Object - otherFactor
Terrain condition - high vegetationFactor
Nose downLanding

Analysis

The plt was on a test flt after an annual inspn was completed. Drg flt, an oil film appeared on the windshield, so he turned back to land at the departure arpt (merrill field). Before reaching merrill field, the oil film became heavy & oil pressure began dropping. The plt elected to land at a pvt airstrip. Drg the apch, he slipped the acft for visibility. He said he made a normal touchdown, but drg the landing, the acft drifted to the left, hit a rock & some high vegetation, then nosed down. An exam of the acft revealed there was a small leak in the eng oil cooler.

Aircraft

Registration
N2137Z
Reported as
Cessna 180
Category
Airplane
Serial number
18051237
Engine
Continental O-470-R, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Operator
Anderson, Kenneth
Registered owner
Kenneth Anderson
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 1, 1989 · 1 hours before
Departed
MRI · Anchorage, AK
Airport
O'Malley, runway 16, 1,600 × 60 ft, dirt

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
51
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine sea
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
2,512 total · 970 in this make and model · 2,394 as pilot in command · 12 in the last 90 days · 2 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 7 knots
Visibility
50 statute miles
Lowest ceiling
3,800 ft broken
Temperature
57 °F, dew point 52 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.