Individually Owned: 150,657
Corporate Owned: 137,281
Natahona Creek Airport
Aircraft Accident/Incident Report
Tok, Alaska 99780
Friday, September 2, 1994 11:26 AKD
NTSB Narrative Summary Released at Completion of Accident
AS THE AIRPLANE REACHED THE END OF THE 600-FT STRIP, THE PILOT APPLIED THE SECOND NOTCH OF FLAPS. THE AIRPLANE BECAME AIRBORNE FOR ABOUT 20 FT, AND THEN SETTLED INTO BRUSH. THE PASSENGER REPORTED THAT 'MY IMPRESSION IS THAT WE LACKED OR LOST ADEQUATE POWER TO MAINTAIN FLIGHT...' ANOTHER COMPANY PA-18 AT SITE HAD NO DIFFICULTY IN FERRYING EVERYONE FROM THE SITE. EXAMINATION OF THE ENGINE SHOWED THAT AN EXHAUST CAM LOBE WAS 30-40% WORN, AND THE ASSOCIATED CAM FOLLOWER WAS WORN AND DISH SHAPED. THE DEPTH OF THE WORN AREAS EXCEEDED THE DEPTH OF THE NITRATED SURFACE. ACCORDING TO THE DIR OF MAINT, A 50-HR INSPECTION WAS PERFORMED PREVIOUS TO THIS FLIGHT AND METAL PARTICLES WERE FOUND IN THE OIL SCREEN.
NTSB Probable Cause Narrative
THE WORN CAM SHAFT LOBE AND WORN VALVE LIFTER.
Event Information
| Type of Event | Accident |
| Event Date | 9/2/1994 |
| Event Day of the Week | Friday |
| Time of Event | 1126 |
| Event Time Zone | -- |
| Event City | TOK |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99780 |
| Event Date Year | 1994 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | NATAHONA CREEK |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 3700 |
| Weather Briefing Completeness | Partial - limited by pilot |
| 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 | 4500 |
| Lowest Non-Ceiling Height | 2000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 3 |
| Air Temperature at event time (in degrees celsius) | 1 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | 3850 |
| Intensity of Precipitation | Moderate |
| 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) | 1592 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Sep 3 1994 12:00AM |
| NTSB Notification Time | 1011 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 6 2000 12:12PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N8597D |
| NTSB Number | ANC94LA129 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| 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 | 18-6248 |
| 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 | 100 Hour |
| Date of Last Inspection | Aug 12 1994 12:00AM |
| Airframe hours since last inspection | 48 |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | LEIF L. WILSON |
| Aircraft Owner Street Address | BOX 707 |
| Aircraft Owner City | TOK |
| Aircraft Owner State | AK |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 99780 |
| Operator is an individual? | -- |
| Operator Name | 40 MILE AIR, LTD. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 6262 OLD AIRPORT WAY |
| Operator City | TOK |
| Operator State | AK |
| Operator Country | |
| Operator Zip code | 99780 |
| Operator Code | FMAA |
| Owner has at least one certificate | Yes - certificate holder |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger/Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1126 |
| Departure Time Zone | ADT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | TKJ |
| Destination City | |
| Destination State | AK |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Mar 19 2001 5:02PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 27 |
| Runway Length | 600 |
| Runway Width | 10 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |