Aircraft Accident/Incident Report

Iliamna, Alaska 99696
Friday, September 9, 1988 13:45 AKD

NTSB Narrative Summary Released at Completion of Accident

THE COMMERCIAL PILOT ATTEMPTED TO TAKEOFF FROM A ROUGH AND SOFT OFF-AIRPORT SITE IN RURAL ALASKA. DURING THE TAKEOFF ROLL, THE AIRPLANE'S MAIN LANDING GEAR ENCOUNTERED AN EXCEPTIONALLY SOFT SPOT, CAUSING THE AIRPLANE TO NOSE OVER. THE PILOT STATED THAT THE ACCIDENT COULD HAVE BEEN AVOIDED IF HE HAD SELECTED HIS LANDING SITE MORE CAREFULLY, AND HAD STAYED AWAY FROM SUCH SOFT TERRAIN.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 9/9/1988
Event Day of the Week Friday
Time of Event 1345
Event Time Zone --
Event City ILIAMNA
Event State ALASKA
Event Country --
Zipcode of the event site 99696
Event Date Year 1988
Event Date Month 9
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
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 3000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 90
Variable Wind Indicator Unknown
Wind Speed (knots) 25
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 35
Altimeter Setting at event time (in. Hg) --
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) 1053
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 37101
Date of most recent change to record Dec 13 2000 12:07PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1759P
NTSB Number ANC88LA131
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
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 18-4079
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 Apr 1 1988 12:00AM
Airframe hours since last inspection 130
Airframe Hours 1480
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name BRIAN C. TUENGE
Aircraft Owner Street Address P.O. BOX 3476
Aircraft Owner City SOLDOTNA
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99669
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
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 Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1345
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code ILL
Destination City ILIAMNA
Destination State AK
Destination Country
Specific Phase of Flight Takeoff
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --