ANC84LA142

NTSB accident investigation · Piper PA-18-150 · Chandalar, AK · August 20, 1984

Accident · No injuriesLimited investigationFinal report
Date
August 20, 1984, 09:23 local (17:23 UTC)
Place
Chandalar, AK
Injuries
2 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N4052ZPiper PA-18-150
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19840820041719A
Case key
4341

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,other - failure,totalCause
Engine assembly,cylinder - separationCause
Fluid,oil - loss,partial
Window,flight compartment window/windshield - other
Visual lookout - reducedPilot in command
Forced landingDescent - emergency
In flight collision with terrain/waterLanding

Analysis

During flt at about 4500 ft MSL, the eng began a severe knocking, then a cylinder separated from the eng & oil completely covered the windshield. The plt tried to make an emergency landing beside the Chandalar river. However, the acft came to rest in the river in about 4 ft of water. Reportedly, a cylinder bolt had failed.

Aircraft

Registration
N4052Z
Reported as
Piper PA-18-150
Category
Airplane
Serial number
18-8054
Airframe hours
3,695
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Keith C. Loontz
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 31, 1984 · 20 hours before
Departed
Savoonga, AK
Destination
Chandalar, AK

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
45
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
1,000 total · 1,000 in this make and model · 900 as pilot in command · 11 in the last 90 days · 11 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
40 statute miles
Lowest ceiling
6,000 ft broken
Temperature
48 °F, dew point 30 °F

FAA reports on this event · 1

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