Zahn Bay Airport
Aircraft Accident/Incident Report

Bluff, Utah 84533
Thursday, April 24, 2008 9:50 MDT

NTSB Narrative Summary Released at Completion of Accident

While landing at a 1,000-foot-long remote dirt airstrip, the pilot encountered gusting variable winds. He said that while focusing on compensating for those winds, he failed to slow the airplane sufficiently. After touchdown, the airplane ran off the end of the airstrip, encountered rocks, and nosed over onto its back.

NTSB Probable Cause Narrative

The pilot's inadequate short-field landing procedure and excessive airspeed that resulted in a landing overrun. Contributing to the accident were gusting unfavorable winds, the short runway, and rocks off the departure end of the strip.

Event Information

Type of Event Accident
Event Date 4/24/2008
Event Day of the Week Thursday
Time of Event 950
Event Time Zone Mountain Daylight Time
Event City Bluff
Event State UTAH
Event Country --
Zipcode of the event site 84533
Event Date Year 2008
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 371316N
Event Location Longitude 1103247W
Event Location Airport Zahn Bay
Event Location Nearest Airport ID NONE
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 3750
Weather Briefing Completeness --
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None 1
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 23617
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record May 28 2008 12:03PM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N134DD
NTSB Number SEA08CA111
Missing Aircraft Indicator --
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 --
Aircraft Manufacturer's Full Name Aviat
Aircraft Model A-1C-200
Aircraft Series Identifier --
Aircraft Serial Number 3015
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name GJ Hangar, LLC
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name John L. Moss
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Grand Junction
Operator State CO
Operator Country USA
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 --
Departure Point Same as Event No
Departure Airport Code U66
Departure City Bluff
Departure State UT
Departure Country USA
Departure Time --
Departure Time Zone --
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Bluff
Destination State UT
Destination Country USA
Specific Phase of Flight Landing - roll
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 7 2008 1:18PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location 04
Runway Length 1000
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --