Unalakleet Airport
Aircraft Accident/Incident Report

Unalakleet, Alaska 99684
Thursday, January 31, 1985 13:12 AST

NTSB Narrative Summary Released at Completion of Accident

ACFT VEERED TO THE LEFT AND CONTACTED A SNOWBANK DURING THE TAKEOFF GROUND ROLL. INSPECTION REVEALED PLT FAILED TO REMOVE THE RUDDER GUST LOCK BEFORE TAKEOFF WAS ATTEMPTED.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 1/31/1985
Event Day of the Week Thursday
Time of Event 1312
Event Time Zone Atlantic Standard Time
Event City UNALAKLEET
Event State ALASKA
Event Country --
Zipcode of the event site 99684
Event Date Year 1985
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport UNALAKLEET
Event Location Nearest Airport ID UNK
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 21
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 0
Lowest Non-Ceiling Height 1500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
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) 2
Dew Point at event time (in degress fahrenheit) -1
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 27
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 14
NTSB Notification Source --
NTSB Notification Date Jan 30 1985 12:00AM
NTSB Notification Time 1520
Fiche Number and/or location -used to find docket information 27140
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N410WR
NTSB Number ANC85LA043
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 CESSNA
Aircraft Model U206G
Aircraft Series Identifier U206G
Aircraft Serial Number 04472
Certified Max Gross Weight 3500
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Dec 1 1984 12:00AM
Airframe hours since last inspection 21
Airframe Hours 5021
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name RYAN AIR SERVICE, INC.
Aircraft Owner Street Address P.O. BPX 127
Aircraft Owner City UNALAKLEET
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99684
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 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 Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code UNK
Departure City UNALAKLEET
Departure State AK
Departure Country
Departure Time 1312
Departure Time Zone AKS
Destination Same as Local Flt --
Destination Airport Code SKI
Destination City SHAKTOOLIK
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 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 32
Runway Length 6000
Runway Width 170
Sight Seeing flight No
Air Medical Flight No
Medical Flight --