Aircraft Accident/Incident Report

King Salmon, Alaska 99613
Thursday, July 16, 1998 17:25 AKD

NTSB Narrative Summary Released at Completion of Accident

The pilot had leveled off in cruise and was leaning the fuel mixture when the mixture control ceased to have effect. The pilot stated that the engine began to lose power, then quit. The airplane nosed over during the forced landing in tundra. Postaccident inspection revealed the mixture control cable had unscrewed from the mixture control arm. The cable had been replaced 238 hours prior to the accident, and was inspected 142, and 44 hours prior to the accident. The service manual specified the jam nut that locked the cable to the arm be torqued to 15 +/- 2 inch-pounds. There was no safety wire requirement for this linkage. If disconnected, gravity would allow the mixture control arm to fail to idle-cutoff.

NTSB Probable Cause Narrative

The disconnection of the mixture control cable from the mixture control arm. Factors associated with this accident were the inadequate 100 hour inspections performed by company mechanics.

Event Information

Type of Event Accident
Event Date 7/16/1998
Event Day of the Week Thursday
Time of Event 1725
Event Time Zone --
Event City KING SALMON
Event State ALASKA
Event Country --
Zipcode of the event site 99613
Event Date Year 1998
Event Date Month 7
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1752 Atlantic Daylight Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID AKN
Elevation of weather observation facility 57
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation ADT
Lighting Conditions Day
Lowest Ceiling Height 3200
Lowest Non-Ceiling Height 2000
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) 10
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Unknown
Wind Speed (knots) 6
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 Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 640
NTSB Notification Source --
NTSB Notification Date Jul 16 1998 12:00AM
NTSB Notification Time 1830
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Nov 15 2001 8:33AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1763U
NTSB Number ANC98LA099
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 207
Aircraft Series Identifier 207
Aircraft Serial Number 20700363
Certified Max Gross Weight 3800
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 7
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jul 3 1998 12:00AM
Airframe hours since last inspection 44
Airframe Hours 14529
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name YUTE AIR ALASKA, INC.
Aircraft Owner Street Address 4706 HARDING DRIVE
Aircraft Owner City ANCHORAGE
Aircraft Owner State AK
Aircraft Owner Country
Aircraft Owner Zipcode 99502
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address PO BOX 190169
Operator City ANCHORAGE
Operator State AK
Operator Country
Operator Zip code 99519
Operator Code YAAA
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 Mail
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code AKN
Departure City
Departure State
Departure Country
Departure Time 1720
Departure Time Zone ADT
Destination Same as Local Flt --
Destination Airport Code EII
Destination City EGEGIK
Destination State AK
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --