Aircraft Accident/Incident Report

Near Cold Bay, Alaska 99571
Friday, October 13, 1989 18:40 AKD

NTSB Narrative Summary Released at Completion of Accident

THE PILOT REPORTED HE WAS USING CARBURETOR HEAT ABOUT EVERY HALF HOUR OF THE FLIGHT, BECAUSE HE WAS HAVING PROBLEMS WITH CARBURETOR ICE. AFTER FLYING THRU A PASS, HE BEGAN A LONG, LOW POWER DESCENT, BUT WAS UNABLE TO RECALL IF HE HAD APPLIED CARBURETOR HEAT DURING THE DESCENT. SUBSEQUENTLY, THE ENGINE STOPPED PRODUCING POWER. THE PILOT WAS FORCED TO LAND IN AN AREA OF ALDER BUSHES AND THE AIRCRAFT WAS DAMAGED. AFTER THE AIRCRAFT WAS RECOVERED, AN OPERATIONAL CHECK OF THE ENGINE REVEALED NO MECHANICAL IRREGULARITIES.

NTSB Probable Cause Narrative

IMPROPER USE OF CARBURETOR HEAT BY THE PILOT, WHICH RESULTED IN LOSS OF ENGINE POWER DUE TO CARBURETOR ICE. CARBURETOR ICING CONDITIONS AND HIGH VEGETATION IN THE FORCED LANDING AREA WERE CONTRIBUTING FACTORS.

Event Information

Type of Event Accident
Event Date 10/13/1989
Event Day of the Week Friday
Time of Event 1840
Event Time Zone --
Event City NEAR COLD BAY
Event State ALASKA
Event Country --
Zipcode of the event site 99571
Event Date Year 1989
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 4000
Lowest Non-Ceiling Height 1500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 250
Variable Wind Indicator Unknown
Wind Speed (knots) 15
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1411
NTSB Notification Source --
NTSB Notification Date Oct 14 1989 12:00AM
NTSB Notification Time 940
Fiche Number and/or location -used to find docket information 39710
Date of most recent change to record Dec 13 2000 1:07PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4065E
NTSB Number ANC90LA005
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name PIPER
Aircraft Model PA-18
Aircraft Series Identifier PA-18
Aircraft Serial Number 18-7809052
Certified Max Gross Weight 1750
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 3 1989 12:00AM
Airframe hours since last inspection 43
Airframe Hours 1032
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name ROGER W MERCER
Aircraft Owner Street Address P.O. BOX 47
Aircraft Owner City COLD BAY
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99571
Operator is an individual? --
Operator Name ROGER WILLIAM MERCER
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address BOX 47
Operator City COLD BAY
Operator State AK
Operator Country
Operator Zip code 99571
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code CDB
Departure City COLD BAY
Departure State AK
Departure Country
Departure Time 1510
Departure Time Zone ADT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --